Ontology for Nutritional Epidemiology
type: Ontology
creator: Chen Yang
version info: V1.2

definition
type: AnnotationProperty

definition source
type: AnnotationProperty

item number
type: AnnotationProperty

characteristics of Nutritional Epidemiological studies
type: ObjectProperty

Nutritional epidemiological terms
type: Class
definition source: Chen Yang

Dietary assessment method
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Nutritional epidemiological terms
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Reference of dietary assessment questionnaire validation
item number: 1
subclass of: Minimal data requirement-descriptor for assay

Dietary records
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary assessment method

Dietary records: short term
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary records

Dietary records: long term weighted(>7 days)
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary records

Dietary records:PDA-technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary records

Dietary records:Mobile phone-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary records

Dietary records:Camera-recorder-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary records

Dietary records:Tape-recorder-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary records

24-Hour recall
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary assessment method

24-Hour Recall:Interactive computer-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: 24-Hour recall

24-Hour Recall:Interactive web-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: 24-Hour recall

Screener
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary assessment method

Screener:Interactive computer-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Screener

Screener:Interactive web-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Screener

Screener:qualitative(only frequency)
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Screener

Screener:semi-quantitative
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Screener

Screener:quantitative
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Screener

Food frequency questionnaire
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary assessment method

FFQ:Interactive computer-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Food frequency questionnaire

FFQ:Interactive web-based technologies
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Food frequency questionnaire

FFQ:qualitative
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Food frequency questionnaire

FFQ:semi-quantitative
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Food frequency questionnaire

FFQ:quantitative
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Food frequency questionnaire

Diet history
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary assessment method

Dietary intake data
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Nutritional epidemiological terms
item number: 4
subclass of: Minimal data requirement-descriptor for assay

Unadjusted data
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary intake data

Adjusted data for total energy intake using density method
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary intake data

Adjusted data for total energy intake using residual method
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary intake data

Estimates of usual intake from short-term measurements
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Dietary intake data

Administration
type: Class
subclass of: Nutritional epidemiological terms

Dietary assessment administration
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Administration
item number: 1
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Proxy-administered
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Dietary assessment administration

Self-administered not verified by interviewer
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Dietary assessment administration

Self-administered and checked by interviewer
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Dietary assessment administration

Interview-administered
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Dietary assessment administration

Interview-administered using AMPM
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Raper N et al. (2004). An overview of USDA's dietary intake data system. J Food Compos Anal 17:545-55.
definition: AMPM (Automated multiple-pass method): Computerized method for collecting interviewer-administered 24-h dietary recalls either in person or by telephone.
subclass of: Dietary assessment administration

Questionnaire
type: Class
subclass of: Nutritional epidemiological terms
item number: 7
label: Questionnaires
definition source: NCIT ontology
definition: A predetermined set of questions.
subclass of: Upload

Dietary assessment questionnaire
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Questionnaires: A predetermined set of questions used to collect data-clinical data, social status, occupational group, etc. This term is often applied to a seft-completed survey instrument, as contrasted with an interview schedule.
subclass of: Questionnaire
item number: 2
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Self-developed questionnaires
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Questionnaires: A predetermined set of questions used to collect data-clinical data, social status, occupational group, etc. This term is often applied to a seft-completed survey instrument, as contrasted with an interview schedule.
subclass of: Dietary assessment questionnaire

Use of standardized questionnaire
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Questionnaires: A predetermined set of questions used to collect data-clinical data, social status, occupational group, etc. This term is often applied to a seft-completed survey instrument, as contrasted with an interview schedule.
subclass of: Dietary assessment questionnaire

Adopted other questionnaires
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Questionnaires: A predetermined set of questions used to collect data-clinical data, social status, occupational group, etc. This term is often applied to a seft-completed survey instrument, as contrasted with an interview schedule.
subclass of: Dietary assessment questionnaire

Content Validity
type: Class
subclass of: Nutritional epidemiological terms

Content validity of dietary assessment questionnaire
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Content validity: The extent to which the measurement incorporates the domain of the phenomenon under study. For example, a measurement of functional health status should embrace activities of daily living (occupational, family, and social functioning, etc.).
subclass of: Content Validity
item number: 3
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Verified content validity in another population
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Content validity: The extent to which the measurement incorporates the domain of the phenomenon under study. For example, a measurement of functional health status should embrace activities of daily living (occupational, family, and social functioning, etc.).
subclass of: Content validity of dietary assessment questionnaire

Verified content validity in a comparable population in terms of both age and dietary habits
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Content validity: The extent to which the measurement incorporates the domain of the phenomenon under study. For example, a measurement of functional health status should embrace activities of daily living (occupational, family, and social functioning, etc.).
subclass of: Content validity of dietary assessment questionnaire

Reference of dietary assessment questionnaire validation
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Nutritional epidemiological terms
item number: 4
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Objective method
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Reference of dietary assessment questionnaire validation

Biomarker of dietary intake
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: Porta M. A dictionary of epidemiology. 6th ed. [internet].
definition: Biomarker: A substance, structure, or process that can be measured in biological specimens or media and may be associated with health outcomes or biological effects. A cellular, biochemical, or molecular indicator of exposure; of biological, subclinical, or clinical effects; or of possible susceptibility. A biological indicator of internal dose, biologically effective dose, early biological response, altered structure, or altered function.
subclass of: Objective method

Validated information
type: Class
subclass of: Nutritional epidemiological terms

Validated information of dietary assessment questionnaire
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Validated information
item number: 5
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Properties of dietary assessment questionnaire
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Validated information of dietary assessment questionnaire

Inter-rater reliability
type: Class
subclass of: Properties of dietary assessment questionnaire

Frequency options to identify between-person variations
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Validated information of dietary assessment questionnaire

Food items lead to underestimated target nutrients intake
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Validated information of dietary assessment questionnaire

Validation type for dietary assessment questionnaire
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Nutritional epidemiological terms
item number: 6
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

concurrent validity
type: Class
subclass of: Validation type for dietary assessment questionnaire

Precision
type: Class
subclass of: Validation type for dietary assessment questionnaire

Quantification of portion sizes
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Nutritional epidemiological terms
item number: 8
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Not quantified portion sizes
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Quantification of portion sizes

Standard portion sizes without aids
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Quantification of portion sizes

Standard portion sizes with aids
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Quantification of portion sizes

Portion sizes are assessed digitally but not verified by trained staff
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Quantification of portion sizes

Portion sizes are assessed digitally and verified by trained staff (or packaging)
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Quantification of portion sizes

Portion size of dietary intake data
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Nutritional epidemiological terms
item number: 9
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Directly expressed portion size
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Portion size of dietary intake data

Converted portion size
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Portion size of dietary intake data

Unconverted portion size
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D064787
definition: Portion size: The amount of a particular food one chooses to eat at a single meal.
subclass of: Portion size of dietary intake data

Matched consumed food to referred food composition data
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition: Food matching links food consumption data with food composition data and affects the quality of the dietary assessment and accuracy of findings. High-quality matching is desirable but it often not achievable due to lack of food composition data or information on food consumed.
subclass of: Nutritional epidemiological terms
item number: 11
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Exact matching
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: FAO/INFOODS Guidelines for food matching. Version 1.2. Rome (Italy): FAO; 2012.
definition: Food matching links food consumption data with food composition data and affects the quality of the dietary assessment and accuracy of findings. High-quality matching is desirable but it often not achievable due to lack of food composition data or information on food consumed.
definition: Exact match: if food description reported in 24-h recall matched exactly with the description in food consumption data.
subclass of: Matched consumed food to referred food composition data

Matched to means of min. 3 food items
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition: Food matching links food consumption data with food composition data and affects the quality of the dietary assessment and accuracy of findings. High-quality matching is desirable but it often not achievable due to lack of food composition data or information on food consumed.
subclass of: Matched consumed food to referred food composition data

Matched to same food items with similar moisture content
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition: Food matching links food consumption data with food composition data and affects the quality of the dietary assessment and accuracy of findings. High-quality matching is desirable but it often not achievable due to lack of food composition data or information on food consumed.
subclass of: Matched consumed food to referred food composition data

Matched to a different food
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition: Food matching links food consumption data with food composition data and affects the quality of the dietary assessment and accuracy of findings. High-quality matching is desirable but it often not achievable due to lack of food composition data or information on food consumed.
subclass of: Matched consumed food to referred food composition data

Representativeness of the week/weekend days
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Nutritional epidemiological terms
item number: 12
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Diet History-descriptor

Weekend
type: Class
subclass of: Representativeness of the week/weekend days

Weekday
type: Class
subclass of: Representativeness of the week/weekend days

Number of recall/measurement days per individual
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Nutritional epidemiological terms
item number: 13
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Diet History-descriptor

Selection of recall/measurement days
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Nutritional epidemiological terms
item number: 14
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Diet History-descriptor

Convenience selection
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Selection of recall/measurement days

Consecutive days
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Selection of recall/measurement days

Non-consecutive, non-random days
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Selection of recall/measurement days

Randomly over the week
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
subclass of: Selection of recall/measurement days

The time of diet records
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D015930
definition: Diet records: Records of nutrient intake over a specific period of time, usually kept by the patient.
subclass of: Nutritional epidemiological terms
item number: 15
subclass of: Dietary records-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Not during eating occasions nor immediately after
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D015930
definition: Diet records: Records of nutrient intake over a specific period of time, usually kept by the patient.
subclass of: The time of diet records

Immediately after eating occasion
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D015930
definition: Diet records: Records of nutrient intake over a specific period of time, usually kept by the patient.
subclass of: The time of diet records

During eating occasion
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D015930
definition: Diet records: Records of nutrient intake over a specific period of time, usually kept by the patient.
subclass of: The time of diet records

Food quantification method
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D044382
definition: Population groups: Individuals classified according to their sex, racial origin, religion, common place of living, financial or social status, or some other cultural or behavioral attribute.
subclass of: Nutritional epidemiological terms
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Food quantification method tailored to the characteristics of the population
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D044382
definition: Population groups: Individuals classified according to their sex, racial origin, religion, common place of living, financial or social status, or some other cultural or behavioral attribute.
subclass of: Food quantification method

Food quantification method not specifically tailored to the characteristics of the population
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition source: http://purl.bioontology.org/ontology/MESH/D044382
definition: Population groups: Individuals classified according to their sex, racial origin, religion, common place of living, financial or social status, or some other cultural or behavioral attribute.
subclass of: Food quantification method

Descriptors for nutritional epidemiological data
type: Class

Minimal data requirement of observational studies-descriptor
type: Class
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
definition: "It describes a set of mandatory descriptors, totaling 41, following the the ISA categories. The Investigation category contains 12 descriptors devoted to collecting metadata about the project context, informed consent and ethical issues (descriptors 1-7), data-sharing policy (descriptors 8-11), and data analysis permissions (descriptors 12). The Study category describes a set of 12 descriptors about the study design (descriptors 1-2), study subjects (descriptors 3-5 and 12), and recruitment (descriptors 6-11). The Assay category with 17 descriptors describes end-points (descriptors 1-10), study samples ( descriptors 11-14), and analytical measurements (descriptors 15-17)."- Pinart M et al. 2018.
subclass of: Descriptors for nutritional epidemiological data

Minimal data requirement-descriptor for investigation
type: Class
definition source: ISA framework
definition: I-inverstigation; S-study; A-Assay.
subclass of: Minimal data requirement of observational studies-descriptor

Study Name
type: Class
item number: 1
definition source: NCIT ontology
definition: The name applied to a scientific investigation.
subclass of: Minimal data requirement-descriptor for investigation

Acronym
type: Class
item number: 1
definition source: NCIT ontology
definition: The non-unique initials or abbreviated name used for identification.
subclass of: Study Name

Country
type: Class
item number: 2
definition source: NCIT ontology
definition: A collective generic term that refers here to a wide variety of dependencies, areas of special sovereignty, uninhabited islands, and other entities in addition to the traditional countries or independent states.
subclass of: Minimal data requirement-descriptor for investigation

Study objective
type: Class
item number: 3
definition source: NCIT ontology
definition: The reason for performing a study in terms of the scientific questions to be answered by the analysis of data collected during the study.
subclass of: Minimal data requirement-descriptor for investigation

Principal Investigator
type: Class
item number: 4
definition source: NCIT ontology
definition: An investigator who is responsible for all aspects of the conduct of a study.
subclass of: Minimal data requirement-descriptor for investigation

Contact information
type: Class
item number: 5
definition source: NCIT ontology
definition: Information regarding the means of contacting a person or group.
subclass of: Minimal data requirement-descriptor for investigation

Contact person
type: Class
item number: 5
definition source: NCIT ontology
definition: A person acting as a channel for communication between groups or on behalf of a group.
subclass of: Contact information

Funding Organization
type: Class
item number: 6
definition source: VIVO
definition: A defined class of organizations that fund Grants An organization that provides financial support to individuals or organizations to carry out specified activities.
subclass of: Minimal data requirement-descriptor for investigation

Upload
type: Class
item number: 7
definition source: NCIT ontology
definition: To transfer a file or program to a central computer from a smaller computer or a computer at a remote location.
subclass of: Minimal data requirement-descriptor for investigation

Study reference link page description
type: Class
item number: 7
definition source: NCIT ontology
definition: The textual representation of the linked page.
subclass of: Upload

Study registration number
type: Class
item number: 7
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Upload

IRB-IEC Approval
type: Class
item number: 7
definition source: Content Archive Resource Exchange Lexicon (ontology)
definition: Study Site specific document containing the determination of the Institutional Review Board (IRB) or independent ethics committee (IEC) that the clinical study with human subject participation has been reviewed and may be conducted at a particular study site within the constraints set forth by the IRB and other institutional and federal requirements.
subclass of: Upload

Informed consent
type: Class
item number: 7
definition source: MESH ontology
definition: Voluntary authorization, by a patient or research subject, with full comprehension of the risks involved, for diagnostic or investigative procedures, and for medical and surgical treatment.
subclass of: Upload

Study Protocol
type: Class
item number: 7
definition source: NCIT ontology
definition: The formal plan of an experiment or research activity, including the objective, rationale, design, materials and methods for the conduct of the study; intervention description, and method of data analysis.
subclass of: Upload

standard operating procedure
type: Class
item number: 7
definition source: Semanticscience Integrated Ontology
definition: A standard operating procedure is a specification approved for use in specific environments.
subclass of: Upload

Publications
type: Class
item number: 7
definition source: MESH ontology
definition: Copies of a work or document distributed to the public by sale, rental, lease, or lending. (From ALA Glossary of Library and Information Science, 1983, p181).
subclass of: Upload

DOI
type: Class
item number: 7
definition source: EDAM ontology
definition: Digital Object Identifier (DOI) of a published article.
subclass of: Publications

URL
type: Class
item number: 7
definition source: EDAM ontology
definition: A Uniform Resource Locator (URL).
subclass of: Publications

Study terminated
type: Class
item number: 8
definition source: NCIT ontology
definition: A clinical study status designating the study has been stopped prematurely and will not resume. Subject enrollment stopped. No participants are treated or being followed up.
subclass of: Minimal data requirement-descriptor for investigation

Data sharing policy
type: Class
item number: 9
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for investigation

Aggregate data sharing policy
type: Class
item number: 10
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for investigation

Metadata
type: Class
item number: 11
definition source: NCIT ontology
definition: Data about data; information that describes another set of data.
subclass of: Minimal data requirement-descriptor for investigation

Publicly accessible
type: Class
item number: 10, 11, 12
definition source: ONE ontology
subclass of: Data sharing policy
subclass of: Aggregate data sharing policy
subclass of: Metadata

Accessible upon request
type: Class
item number: 10, 11, 12
definition source: ONE ontology
subclass of: Data sharing policy
subclass of: Aggregate data sharing policy
subclass of: Metadata

Not publicly accessible
type: Class
item number: 10, 11, 12
definition source: ONE ontology
subclass of: Data sharing policy
subclass of: Aggregate data sharing policy
subclass of: Metadata

Data analysis permission
type: Class
item number: 12
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for investigation

accessible raw data
type: Class
item number: 12
definition source: ONE ontology
subclass of: Data analysis permission

federated analysis
type: Class
item number: 12
definition source: ONE ontology
subclass of: Data analysis permission

Minimal data requirement-descriptor for study
type: Class
definition source: ISA framework
definition: I-inverstigation; S-study; A-Assay.
subclass of: Minimal data requirement of observational studies-descriptor

Epidemiologic Studies
type: Class
item number: 1
definition source: MESH ontology
definition: Studies designed to examine associations, commonly, hypothesized causal relations. They are usually concerned with identifying or measureing the effects of risk factors or exposures. The common types of analytic study are case-control studies, cohort studies, and cross-sectional studies.
subclass of: Minimal data requirement-descriptor for study

Cohort Studies
type: Class
item number: 1
definition source: MESH ontology
definition: Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.
subclass of: Epidemiologic Studies

Cross-sectional studies
type: Class
item number: 1
definition source: MESH ontology
definition: Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.
subclass of: Epidemiologic Studies

Case-control studies
type: Class
item number: 1
definition source: MESH ontology
definition: Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time.
subclass of: Epidemiologic Studies

Seroepidemiologic study
type: Class
item number: 1
definition source: MESH ontology
definition: EPIDEMIOLOGIC STUDIES based on the detection through serological testing of characteristic change in the serum level of specific ANTIBODIES. Latent subclinical infections and carrier states can thus be detected in addition to clinically overt cases.
subclass of: Epidemiologic Studies

Study description
type: Class
item number: 2
definition source: NCIT ontology
definition: Specific, essential aspects of an investigation that are detailed, including structure, blinding, dosage, and participant demographics.
subclass of: Minimal data requirement-descriptor for study

Study population
type: Class
item number: 3
definition source: NCIT ontology
definition: A target study population with characteristics, including inclusion and exclusion criteria, precisely defined in the study protocol. This is a population to which the study results could be reasonably generalized.
subclass of: Minimal data requirement-descriptor for study

General population
type: Class
item number: 3
definition source: NCIT ontology
subclass of: Study population

Population Characteristics
type: Class
item number: 4
definition source: MESH ontology
definition: Qualities and characterization of various types of populations within a social or geographic group, with emphasis on demography, health status, and socioeconomic factors.
subclass of: Minimal data requirement-descriptor for study

Population representativeness
type: Class
item number: 5
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for study

National level
type: Class
item number: 5
definition source: ONE ontology
subclass of: Population representativeness

Subnational level
type: Class
item number: 5
definition source: ONE ontology
subclass of: Population representativeness

Community level
type: Class
item number: 5
definition source: ONE ontology
subclass of: Population representativeness

Sampling method
type: Class
item number: 6
definition source: NCIT ontology
subclass of: Minimal data requirement-descriptor for study

Equal Probability Sampling Method
type: Class
item number: 6
definition source: NCIT ontology
definition: A random process used to select a study population in which each participant has an equal chance of being chosen.
subclass of: Sampling method

Simple random sampling
type: Class
item number: 6
definition source: ONE ontology
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Equal Probability Sampling Method

Stratified random sampling
type: Class
item number: 6
definition source: ONE ontology
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Equal Probability Sampling Method

Multi-stage sampling
type: Class
item number: 6
definition source: ONE ontology
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Equal Probability Sampling Method

Non-Probability Sampling Method
type: Class
item number: 6
definition source: NCIT ontology
definition: A non-random process used to select a study population in which the participants have been selected based on convenience or with a particular purpose in mind.
subclass of: Sampling method

Voluntary response sampling
type: Class
item number: 6
definition source: ONE ontology
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Non-Probability Sampling Method

Judgement sampling
type: Class
item number: 6
definition source: ONE ontology
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Non-Probability Sampling Method

Convenience sampling
type: Class
item number: 6
definition source: ONE ontology
definition source: Mariona Pinart et al. (2018). Joint Data Analysis in Nutritional Epidemiology: Identification of Observational Studies and Minimal Requirements. The Journal of Nutrition:148(2):285-297.
subclass of: Non-Probability Sampling Method

Control group
type: Class
item number: 7
definition source: MESH ontology
definition: Groups that serve as a standard for comparison in experimental studies. They are similar in relevant characteristics to the experimental group but do not receive the experimental intervention.
subclass of: Minimal data requirement-descriptor for study
item number: 9
label: Control groups
definition source: 1) MeSH; 2) Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: 1) Groups that serve as a standard for comparison in experimental studies. They are similar in relevant characteristics to the experimental group but do not receive the experimental intervention; 2) Controls: Subjects with whom a comparison is made. In a case-control study, controls are often defined as noncases or by other postexposure events, making them especially susceptible to selection bias. Selection of appropriate controls is crucial to the validity of epidemiologic and clinical studies.
subclass of: Data quality descriptors for case-control study

Control type
type: Class
item number: 8
definition source: NCIT ontology
definition: A characteristic of a treatment regimen employed as a comparator against which the study treatment is evaluated.
subclass of: Minimal data requirement-descriptor for study

Recruitment period
type: Class
item number: 9
definition source: NCIT ontology
definition: The interval of time during which subjects are to be enrolled in a clinical study.
subclass of: Minimal data requirement-descriptor for study

follow-ups
type: Class
item number: 10
definition source: NCIT ontology
definition: The process by which information about the health status of an individual is obtained after a study has officially closed; an activity that continues something that has already begun or that repeats something that has already been done.
subclass of: Minimal data requirement-descriptor for study

Action
type: Class
item number: 10
subclass of: follow-ups

Total number of participants recruited
type: Class
item number: 11
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for study

Total number of males recruited
type: Class
item number: 11
definition source: ONE ontology
subclass of: Total number of participants recruited

Total number of females recruited
type: Class
item number: 11
definition source: ONE ontology
subclass of: Total number of participants recruited

Participants age range
type: Class
item number: 12
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for study

age.min
type: Class
item number: 12
definition source: ONE ontology
subclass of: Participants age range

age.max
type: Class
item number: 12
definition source: ONE ontology
subclass of: Participants age range

Minimal data requirement-descriptor for assay
type: Class
definition source: ISA framework
definition: I-inverstigation; S-study; A-Assay.
subclass of: Minimal data requirement of observational studies-descriptor

Food composition table
type: Class
item number: 2(MDR)10(QAT)
definition source: ONE ontology
subclass of: Minimal data requirement-descriptor for assay
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

food product type
type: Class
item number: 3
definition source: FoodOn ontology
definition: LanguaL curation note: This term is for CLASSIFICATION ONLY; DO NOT USE term in indexing. Use a more precise narrower term.
subclass of: Minimal data requirement-descriptor for assay

Physical activity measurement
type: Class
item number: 5
definition source: NCIT ontology
definition: A measurement of a subject's physical activity or movement.
subclass of: Minimal data requirement-descriptor for assay

Objective measurement
type: Class
item number: 5
definition source: ONE ontology
subclass of: Physical activity measurement

Subjective measurement
type: Class
item number: 5
definition source: ONE ontology
subclass of: Physical activity measurement

Tobacco use
type: Class
item number: 6
definition source: NeSH ontology
definition: Use of TOBACCO (Nicotiana tabacum L) and TOBACCO PRODUCTS.
subclass of: Minimal data requirement-descriptor for assay

Alcohol consumption
type: Class
item number: 7
definition source: NCIT ontology
definition: Consumption of liquids containing ethanol, including the behaviors associated with drinking the alcohol.
subclass of: Minimal data requirement-descriptor for assay

Anthropometry
type: Class
item number: 8
definition source: NeSH ontology
definition: The technique that deals with the measurement of the size, weight, and proportions of the human or other primate body.
subclass of: Minimal data requirement-descriptor for assay

Body Weights
type: Class
item number: 8
definition source: NeSH ontology
definition: The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.
subclass of: Anthropometry

Body Height
type: Class
item number: 8
definition source: NeSH ontology
definition: The distance from the sole to the crown of the head with body standing on a flat surface and fully extended.
subclass of: Anthropometry

Waist Circumference
type: Class
item number: 8
definition source: NeSH ontology
definition: The measurement around the body at the level of the ABDOMEN and just above the hip bone. The measurement is usually taken immediately after exhalation.
subclass of: Anthropometry

Body Mass Index
type: Class
item number: 8
definition source: NeSH ontology
definition: An indicator of body density as determined by the relationship of BODY WEIGHT to BODY HEIGHT. BMI=weight (kg)/height squared (m2). BMI correlates with body fat (ADIPOSE TISSUE). Their relationship varies with age and gender. For adults, BMI falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (National Center for Health Statistics, Centers for Disease Control and Prevention).
subclass of: Anthropometry

Body Fat Distribution
type: Class
item number: 8
definition source: NeSH ontology
definition: Deposits of ADIPOSE TISSUE throughout the body. The pattern of fat deposits in the body regions is an indicator of health status. Excess ABDOMINAL FAT increases health risks more than excess fat around the hips or thighs, therefore, WAIST-HIP RATIO is often used to determine health risks.
subclass of: Anthropometry

Sociodemographic factors
type: Class
item number: 9
definition source: ONTOAD ontology
subclass of: Minimal data requirement-descriptor for assay

Health outcomes
type: Class
item number: 10
definition source: HL7 ontology
definition: Health Outcomes Institute codes for outcome variables available (with responses) from Stratis Health (formerly Foundation for Health Care Evaluation and Health Outcomes Institute), 2901 Metro Drive, Suite 400, Bloomington, MN, 55425-1525; (612) 854-3306 (voice); (612) 853-8503 (fax); dziegen@winternet.com. See examples in the Implementation Guide.
subclass of: Minimal data requirement-descriptor for assay

Genitourinary samples
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Minimal data requirement-descriptor for assay

Blood sample
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Genitourinary samples

Serum sample
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Genitourinary samples

Plasma sample
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Genitourinary samples

Urine sample
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Genitourinary samples

Saliva sample
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Genitourinary samples

Faeces sample
type: Class
item number: 11-12
definition source: CTV3 ontology
subclass of: Genitourinary samples

Fasting
type: Class
item number: 13
definition source: CTV3 ontology
subclass of: Minimal data requirement-descriptor for assay

Sampling
type: Class
item number: 14
definition source: NCIT ontology
definition: The selection and obtaining of small representative quantities of biological material for the purpose of analysis; also, in biomedical statistics, sampling is the selection and implementation of statistical observations in order to estimate properties of an underlying population; also, in environmental science, the collection of representative specimens analyzed to characterize site conditions.
subclass of: Minimal data requirement-descriptor for assay

Omics
type: Class
item number: 15
definition source: EDAM ontology
definition: The collective characterisation and quantification of pools of biological molecules that translate into the structure, function, and dynamics of an organism or organisms.
subclass of: Minimal data requirement-descriptor for assay

Biomarkers
type: Class
item number: 15
definition source: EDAM ontology
definition: Objective indicators of biological state often used to assess health, and determinate treatment.
subclass of: Omics

Metabolomics
type: Class
item number: 15
definition source: EDAM ontology
definition: The systematic study of metabolites, the chemical processes they are involved, and the chemical fingerprints of specific cellular processes in a whole cell, tissue, organ or organism.
subclass of: Omics

Proteomics
type: Class
item number: 15
definition source: EDAM ontology
definition: Includes metaproteomics: proteomics analysis of an environmental sample. Proteomics includes any methods (especially high-throughput) that separate, characterize and identify expressed proteins such as mass spectrometry, two-dimensional gel electrophoresis and protein microarrays, as well as in-silico methods that perform proteolytic or mass calculations on a protein sequence and other analyses of protein production data, for example in different cells or tissues. Protein and peptide identification, especially in the study of whole proteomes of organisms.
subclass of: Omics

Genomics
type: Class
item number: 15
definition source: EDAM ontology
definition: Whole genomes of one or more organisms, or genomes in general, such as meta-information on genomes, genome projects, gene names etc.
subclass of: Omics

Transcriptomics
type: Class
item number: 15
definition source: EDAM ontology
definition: The analysis of transcriptomes, or a set of all the RNA molecules in a specific cell, tissue etc.
subclass of: Omics

Metabolite profiling
type: Class
item number: 16
definition source: OBI ontology
definition: metabolite profiling is a process which aims at detecting and identifying chemical entities resulting from biochemical and cellular metabolism
subclass of: Minimal data requirement-descriptor for assay

Mass spectrometry
type: Class
item number: 17
definition source: MeSH ontology
definition: An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
subclass of: Minimal data requirement-descriptor for assay

Chromatography
type: Class
item number: 17
definition source: MeSH ontology
definition: Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts.
subclass of: Minimal data requirement-descriptor for assay

Data quality descriptors of observational studies
type: Class
definition source: Chen Yang et al. (2017). Perspective: Essential Study Quality Descriptors for Data from Nutritional Epidemiologic Research. Advances in Nutrition:8(5):639-51.
definition: "It includes 10 descriptors allocated to 'study design' and 22 to 'measurement' domains. Data descriptors were organized as an ordinal scale of items to facilitate the identification, storage, and querying of nutrition data." -- Yang et al. 2017
subclass of: Descriptors for nutritional epidemiological data

Data quality descriptors for study design
type: Class
subclass of: Data quality descriptors of observational studies

Data quality descriptors for cohort study
type: Class
subclass of: Data quality descriptors for study design

Data quality descriptors for cross-sectional study
type: Class
subclass of: Data quality descriptors for study design

Data quality descriptors for case-control study
type: Class
subclass of: Data quality descriptors for study design

Response rate
type: Class
item number: 1
definition source: Porta M. A dictionary of epidemiology. 6th ed. [Internet].
definition: The number of completed or returened survey instruments (questionnaires, interviews, etc.) divided by the total bumber of persons who would have been surveyed if all had participated. Usually expressed as a percentage. Nonresponse can have several causes (e.g., death, removal from the survey community, and refusal).
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Cooperation rate
type: Class
item number: 1
definition source: The American Association for Public Opinion Research. Standard definitions: final dispositions of case codes and outcome rates for surveys. 9th ed. Oakbrook Terrace (IL): AAPOR; 2016.
definition: The number of participants divided by the number eligible that were ever contacted.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Prognostic Covariate
type: Class
item number: 2
definition source: NICT ontology
definition: A variable that directly or indirectly impacts the outcome of a clinical trial.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Confounding Factors (Epidemiology)
type: Class
item number: 2
definition source: MeSH ontology
definition: Factors that can cause or prevent the outcome of interest but are not intermediate variables of the factor(s) under investigation.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Method for confirming diagnosis
type: Class
item number: 3
definition source: Porta M. A dictionary of epidemiology. 6th ed. [Internet].
definition: Diagnosis: the process of determining the health status and the factors responsible for it; may be applied to an individual, family, group, or society. The term is applied both to the process of determination and to its findings.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Non-validated diagnosis
type: Class
item number: 3
definition source: Porta M. A dictionary of epidemiology. 6th ed. [Internet].
definition: Diagnosis: the process of determining the health status and the factors responsible for it; may be applied to an individual, family, group, or society. The term is applied both to the process of determination and to its findings.
subclass of: Method for confirming diagnosis

Missing data
type: Class
item number: 4,5
definition source: 1) NICT ontology 2) Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: 1) Required or expected data that is not present, which may be due to non-completion or corruption. 2) Lack of some information or incomplete information for some study participants. Usually (but not always) the term refers to data missing in ways deviating from the study design.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Missing data-exposure
type: Class
item number: 4
subclass of: Missing data

Missing data-outcome
type: Class
item number: 4
subclass of: Missing data

Missing data-missing (completely) at random
type: Class
item number: 5
definition source: Porta M. A dictionary of epidemiology. 6th ed. [Internet].
definition: Missing completely at random: There are no systematic differences between the missing values and the observed values; Missing at random: Any systematic difference between the missing values and the observed values can be explained by differences in observed data.
subclass of: Missing data

Missing data-missing not at random
type: Class
item number: 5
definition source: Porta M. A dictionary of epidemiology. 6th ed. [Internet].
definition: Missing not at random: Even after the observed data are taken into account, systematic differences remain between the missing values and the observed values.
subclass of: Missing data

Random selection
type: Class
item number: 6
definition source: 1) Porta M. A dictionary of epidemiology. 6th ed. [Internet];2) NWEB: http://srmo.sagepub.com/view/the-sage-dictionary-of-social-research-methods/SAGE.xml
definition: 1) Selection bias: Bias in the estimated association or effect of an exposure on an outcome that arises from the procedures used to select individuals into the study or the analysis. When the selection involves conditioning on a factor that is affected by the exposure or a cause of the exposure, and also affected by the outcome or a cause of the outcome, selection bias can arise even in the absence of a causal effect of exposure on outcome; 2) Random selection: any method of sampling that uses some form of random selection, that is, one that will ensure that all units in the population have an equal probability or chance of being selected.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study

Sample representativeness
type: Class
item number: 7
definition source: Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: Representative sample: A sample that to a large extent resembles a population of interest.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for cross-sectional study
subclass of: Data quality descriptors for case-control study

Representative sample
type: Class
item number: 7
definition source: Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: Representative sample: A sample that to a large extent resembles a population of interest.
subclass of: Sample representativeness

Non-representative sample
type: Class
item number: 7
definition source: Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: Representative sample: A sample that to a large extent resembles a population of interest.
subclass of: Sample representativeness

Incidence
type: Class
item number: 8
definition source: 1) MeSH; 2) Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: 1) The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time; 2) The number of instances of illness commencing, or of persons falling ill, during a given period in a specified population. More generally, the number of new health-related events in a defined population within a specified period of time. It may be measured as a frequency count, a rate, or a proportion.
subclass of: Data quality descriptors for cohort study
subclass of: Data quality descriptors for case-control study

Incidence cases
type: Class
item number: 8
subclass of: Incidence

Control group from same population as cases
type: Class
item number: 9
subclass of: Control group

Control group from similar population as cases
type: Class
item number: 9
subclass of: Control group

Control group from another population
type: Class
item number: 9
subclass of: Control group

Lost to follow-up
type: Class
item number: 10
definition source: Porta M. A dictionaryof epidemiology. 6th ed. [Internet].
definition: Study subjects in COHORT STUDIES whose outcomes are unknown e.g., because they could not or did not wish to attend follow-up visits.
subclass of: Data quality descriptors for cohort study

Data quality descriptors for data measurement
type: Class
subclass of: Data quality descriptors of observational studies

Data quality descriptors for dietary intake data measurement
type: Class
subclass of: Data quality descriptors for data measurement

Dietary records-descriptor
type: Class
subclass of: Data quality descriptors for dietary intake data measurement

24-hour Recall-descriptor
type: Class
subclass of: Data quality descriptors for dietary intake data measurement

Screener-descriptor
type: Class
subclass of: Data quality descriptors for dietary intake data measurement

Food Frequency Questionnaire-descriptor
type: Class
subclass of: Data quality descriptors for dietary intake data measurement

Diet History-descriptor
type: Class
subclass of: Data quality descriptors for dietary intake data measurement

Seasons
type: Class
item number: 7
definition source: From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed
definition: Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic.
subclass of: Dietary records-descriptor
subclass of: 24-hour Recall-descriptor
subclass of: Screener-descriptor
subclass of: Food Frequency Questionnaire-descriptor
subclass of: Diet History-descriptor

Summer
type: Class
definition source: NCIT ontology
definition: The season between the summer solstice and the autumnal equinox.
subclass of: Seasons

Winter
type: Class
definition source: NCIT ontology
definition: The season between the winter solstice and the vernal equinox.
subclass of: Seasons

Spring
type: Class
definition source: NCIT ontology
definition: The season between the vernal equinox and the summer solstice.
subclass of: Seasons

Autumn
type: Class
definition source: NCIT ontology
definition: The season between the autumnal equinox and the winter solstice.
subclass of: Seasons

All seasons
type: Class
subclass of: Seasons

Geographically-specific food composition data
type: Class
definition source: Greenfield H et al. Food composition data: production, management and use. 2nd ed. Rome (Italy): FAO UN; 2003.
definition: In a single country there may be a wide diversity of soil and climatic conditions, resulting in significant variance in food composition.Variations in food marketing and food preparation whthin different parts of a country-or between countries in the case of a multicountry database-may also produce notable variance. For these reasons, geographically specific data may be presented in the database as a supplement to nationwide and/or region-wide averages.
subclass of: Food composition table

Data quality descriptors for anthropometry measurement
type: Class
subclass of: Data quality descriptors for data measurement

Training of assessor
type: Class
item number: 1
definition source: Bergdahl M et al. Handbook on data quality assessment methods and tools. Wiesbaden (Germany): European Commision Eurostat; 2007.
definition: Standard operating procedures (SOP): detailed, written instructions to achieve uniformity of the performance of a specific function.
subclass of: Data quality descriptors for anthropometry measurement

Without assessors/Self-report
type: Class
definition source: NCIT ontology
definition: An individual's perspective or subjective interpretation of an event or information.
subclass of: Training of assessor
label: Self-report
subclass of: Body weight measurement
subclass of: Height measurement
subclass of: Waist circumference measurement
subclass of: Measurement of body mass index

Trained assessor
type: Class
subclass of: Training of assessor

Trained assessors using Standard Operating Procedures
type: Class
definition source: Bergdahl M et al. Handbook on data quality assessment methods and tools. Wiesbaden (Germany): European Commision Eurostat; 2007.
definition: Standard operating procedures (SOP): detailed, written instructions to achieve uniformity of the performance of a specific function.
subclass of: Trained assessor

Trained assessors not using Standard Operating Procedures
type: Class
definition source: Bergdahl M et al. Handbook on data quality assessment methods and tools. Wiesbaden (Germany): European Commision Eurostat; 2007.
definition: Standard operating procedures (SOP): detailed, written instructions to achieve uniformity of the performance of a specific function.
subclass of: Trained assessor

Untrained assessors not using Standard Operating Procedures
type: Class
definition source: Bergdahl M et al. Handbook on data quality assessment methods and tools. Wiesbaden (Germany): European Commision Eurostat; 2007.
definition: Standard operating procedures (SOP): detailed, written instructions to achieve uniformity of the performance of a specific function.
subclass of: Training of assessor

Body weight measurement
type: Class
item number: 2
definition source: NCIT ontology, MeSH
definition: Body weight measurement: a measurement of the body weight of a subject; body weight: The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.
subclass of: Data quality descriptors for anthropometry measurement

Proxy
type: Class
definition source: MeSH
definition: A person authorized to decide or act for another person, for example, a person having durable power of attorney.
subclass of: Body weight measurement
subclass of: Height measurement
subclass of: Waist circumference measurement

Measured with no clothing instructions by an assessor
type: Class
subclass of: Body weight measurement

Measured naked or with only light clothing by an assessor
type: Class
subclass of: Body weight measurement

Height measurement
type: Class
item number: 3
definition source: MeSH
definition: Body height: The distance from the sole to the crown of the head with body standing on a flat surface and fully extended.
subclass of: Data quality descriptors for anthropometry measurement

Measured with shoes
type: Class
subclass of: Height measurement

Measured barefoot
type: Class
subclass of: Height measurement

Waist circumference measurement
type: Class
item number: 4
definition source: MeSH
definition: Waist circumference: The measurement around the body at the level of the abdomen and just above the hip bone. The measurement is usually taken immediately after exhalation.
subclass of: Data quality descriptors for anthropometry measurement

Measured with no clothing instructions
type: Class
subclass of: Waist circumference measurement

Measured naked or with only light clothing
type: Class
subclass of: Waist circumference measurement

Measurement of body mass index
type: Class
item number: 5
definition source: Porta M. A dictionary of epidemiology
definition: BMI: BMI, anthropometric measure, defined as kg/m2.
subclass of: Data quality descriptors for anthropometry measurement

Assessed using pictograms or silhouettes
type: Class
subclass of: Measurement of body mass index

Objective measurement
type: Class
definition source: NCIT ontology
definition: Any measurement that is not subject to observer assessment, such as those registered by an instrument.
subclass of: Measurement of body mass index

Adiposity measurement
type: Class
item number: 6
definition source: MeSH
definition: Adiposity: The amount of fat or lipid deposit at a site or an organ in the body, an indicator of body fat status.
subclass of: Data quality descriptors for anthropometry measurement

Bioelectric impedance analysis
type: Class
definition source: NCIT ontology
definition: A method to assess body composition, i.e., the relative percentages of body weight comprised of fat tissue and lean body mass. It is based on the principle that the resistance to an applied electric current is inversely related to the amount of lean body mass within the body. Impedance is greatest in fat tissue, which contains only 10-20% water, while lean body mass, which contains 70-75% water, allows the signal to pass much more easily.
subclass of: Adiposity measurement

Dual X-ray Absorptiometry
type: Class
definition source: NCIT ontology
definition: A technique for scanning bone and measuring bone mineral density (BMD). A DXA scanner produces 2 X-ray beams, each with different energy levels. One beam is high energy while the other is low energy. The amount of x-rays that pass through the bone is measured for each beam. This will vary depending on the thickness of the bone. Based on the difference between the 2 beams, the bone density can be measured.
subclass of: Adiposity measurement

Waist-Hip Ratio
type: Class
definition source: NCIT ontology
definition: The ratio of the abdominal circumference at the navel to maximum hip and buttocks circumference; looks at the proportion of fat stored on the body around the waist and hip. Carrying extra weight around the waist is a greater health risk than carrying extra weight around the hips or thighs.
subclass of: Adiposity measurement

Skin fold thickness
type: Class
definition source: Clinical Measurement Ontology
definition: This measurement is made on the layer of skin and subcutaneous fat raised by pinching the skin and letting the underlying muscle fall back to the bone. It is often used to estimate percentage of body fat.
subclass of: Adiposity measurement

Case studies
type: Class

STROBE-nut items
type: Class
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.

Title
type: Class
item number: 1
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

nut-1
type: Class
definition: State the dietary/nutritional assessment method(s) used in the title, abstract, or keywords.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Title
subclass of: Abstract

Abstract
type: Class
item number: 1
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

Introduction
type: Class
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

Background rationale
type: Class
item number: 2
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Introduction

Objectives
type: Class
item number: 3
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Introduction

Methods
type: Class
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

Study design
type: Class
item number: 4
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

Settings
type: Class
item number: 5
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-5
type: Class
definition: Describe any characteristics of the study settings that might affect the dietary intake or nutritional status of the participants, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Settings

Participants
type: Class
item number: 6
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-6
type: Class
definition: Report particular dietary, physiological, or nutritional characteristics that were considered when selecting the target population.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Participants

Variables
type: Class
item number: 7
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-7.1
type: Class
definition: Clearly define foods, food groups, nutrients, or other food components.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Variables

nut-7.2
type: Class
definition: When using dietary patterns or indices, describe the methods to obtain them and their nutritional properties.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Variables

Data sources-measurements
type: Class
item number: 8
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-8.1
type: Class
definition: Describe the dietary assessment method(s), e.g., portion sizeestimation,numberofdaysanditemsrecorded,howitwas developed and administered, and how quality was assured. Report if and how supplement intake was assessed.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Data sources-measurements

nut-8.2
type: Class
definition: Describe and justify food composition data used. Explain the procedure to match food composition with consumption data. Describe the use of conversion factors, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Data sources-measurements

nut-8.3
type: Class
definition: Describe the nutrient requirements, recommendations, or dietary guidelines and the evaluation approach used to compare intake with the dietary reference values, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Data sources-measurements

nut-8.4
type: Class
definition: When using nutritional biomarkers, additionally use the STROBE Extension for Molecular Epidemiology (STROBE-ME). Report the type of biomarkers used and their usefulness as dietary exposure markers.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Data sources-measurements

nut-8.5
type: Class
definition: Describe the assessment of nondietary data (e.g., nutritional status and influencing factors) and timing of the assessment of these variables in relation to dietary assessment.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Data sources-measurements

nut-8.6
type: Class
definition: Report on the validity of the dietary or nutritional assessment methods and any internal or external validation used in the study, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Data sources-measurements

Bias
type: Class
item number: 9
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-9
type: Class
definition: Report how bias in dietary or nutritional assessment was addressed, e.g., misreporting, changes in habits as a result of being measured, or data imputation from other sources.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Bias

Study size
type: Class
item number: 10
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

Quantitative variables
type: Class
item number: 11
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-11
type: Class
definition: Explain the categorization of dietary/nutritional data (e.g., use of N-tiles and handling of nonconsumers) and the choice of reference category, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Quantitative variables

Statistical methods
type: Class
item number: 12
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Methods

nut-12.1
type: Class
definition: Describe any statistical method used to combine dietary or nutritional data, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Statistical methods

nut-12.2
type: Class
definition: Describe and justify the method for energy adjustments, intake modeling, and use of weighting factors, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Statistical methods

nut-12.3
type: Class
definition: Report any adjustments for measurement error, i.e., from a validity or calibration study.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Statistical methods

Result
type: Class
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

Participants
type: Class
item number: 13
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Result

nut-13
type: Class
definition: Report the number of indiciduals excluded based on missing, incomplete, or implausible dietary/nutritional data.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Participants

Descriptive data
type: Class
item number: 14
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Result

nut-14
type: Class
definition: Give the distribution of participant characteristics across the exposure variables if applicable. Specify if food consumption of total population or consumers only were used to obtain results.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Descriptive data

Outcome data
type: Class
item number: 15
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Result

Main results
type: Class
item number: 16
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Result

nut-16
type: Class
definition: Specify if nutrient intakes are reported with or without inclusion of dietary supplement intake, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Main results

Other analyses
type: Class
item number: 17
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Result

nut-17
type: Class
definition: Report any sensitivity analysis (e.g. exclusion of misreporters or outliers) and data imputation, if applicable.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Other analyses

Discussion
type: Class
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

Key results
type: Class
item number: 18
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Discussion

Limitation
type: Class
item number: 19
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Discussion

nut-19
type: Class
definition: Describe the main limitations of the data sources and assessment methods used and implications for the interpretation of the findings.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Limitation

Interpretation
type: Class
item number: 20
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Discussion

nut-20
type: Class
definition: Report the nutritional relevance of the findings, given the complexity of diet or nutrition as an exposure.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Interpretation

Generalizability
type: Class
item number: 21
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Discussion

Other information
type: Class
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: STROBE-nut items

Funding
type: Class
item number: 22
definition source: von Elm E et al. (2008). The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 61(4):344-9.
subclass of: Other information

Ethics
type: Class
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Other information

nut-22.1
type: Class
definition: Describe the procedure for consent and study approval from ethics committee(s).
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Ethics

Supplementary material
type: Class
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Other information

nut-22.2
type: Class
definition: Provide data collection tools and data as online material or explain how they can be accessed.
definition source: Carl Lachat et al. (2016). Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): an extension of the STROBE Statement. PLOS MEDICINE. 13(6).
subclass of: Supplementary material

Case studies: study description
type: Class
subclass of: Case studies

Lachat C et al. 2018 PNAS
type: Class
Study Name: Dietary species richness as a measure of food biodiversity and nutritional quality of diet
Country: Benin
Country: Cameroon
Country: Congo
Country: Ecuador
Country: Kenya
Country: Sri Lanka
Country: Vietnam
Study objective: Assess the intricate relationship between food biodiversity and diet quality
Principal Investigator: Lachat C (orcid)
Contact person: Lachat C (orcid)
Funding Organization: en
Publications: http://www.pnas.org/content/115/1/127
DOI: pnas.1709194115
Study terminated: 06/06/2017
Data sharing policy: Publicly accessible
Aggregate data sharing policy: Publicly accessible
Metadata: Publicly accessible
Data analysis permission: accessible raw data
Epidemiologic Studies: Cross-sectional studies
Study description: We applied biodiversity indicators to dietary intake data from and assessed associations with diet quality of women and young children.
Study population: General population
Population Characteristics: Women
Population Characteristics: Child
Population Characteristics: Rural population
Sampling method: Convenience sampling
Recruitment period: Benin:01/10/2013-31/12/2013,01/05/2014-31/07/2014; Cameroon:01/07/2013-31/08/2013; Congo:01/07/2009-30/09/2009; Ecuador:01/03/2011-31/03/2011; Kenya:01/09/2014-30/09/2014; 01/04/2015-30/04/2015; Sir Lanka: 01/07/2013-30/09/2013; Vietnam: 01/08/2014-31/12/2014
Total number of participants recruited: 6226
Total number of females recruited: 2188
age.min: 0.5
age.max: 43
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-7.1
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.3
STROBE-nut items: nut-8.5
STROBE-nut items: nut-11
STROBE-nut items: nut-12.1
STROBE-nut items: nut-12.3
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
STROBE-nut items: nut-22.2
subclass of: Case studies: study description

Case studies: dataset description
type: Class
subclass of: Case studies

Cameroon dataset-Lachat C et al. 2018 PNAS
type: Class
Country: Cameroon
Dietary assessment method: 24-Hour recall
Food composition table: West Africa Food Composition Table (2012), FAO
food product type: Plant food product
food product type: Vertebrate animal food product
food product type: Fish food product
Dietary intake data: Unadjusted data
Health outcomes: 01/07/2013-31/08/2013
Sampling: 01/07/2013-31/08/2013
Random selection: Convenience sampling
Sample representativeness: Non-representative sample
Dietary assessment administration: Interview-administered
Dietary assessment questionnaire: Self-developed questionnaires
Seasons: Rainy season
Quantification of portion sizes: Portion sizes are assessed digitally and verified by trained staff (or packaging)
Portion size of dietary intake data: Directly expressed portion size
Portion size of dietary intake data: Converted portion size
Matched consumed food to referred food composition data: Exact matching
Matched consumed food to referred food composition data: Matched to a different food
Number of recall/measurement days per individual: 2
Selection of recall/measurement days: Non-consecutive, non-random days
The time of diet records: Not during eating occasions nor immediately after
Food quantification method: Food quantification method not specifically tailored to the characteristics of the population
subclass of: Case studies: dataset description

Mills et al. 2017
type: Class
Study Name: Frequency of eating home cooked meals and potential benefits for diet and health: cross-sectional analysis of a population-based cohort study
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.3
STROBE-nut items: nut-8.4
STROBE-nut items: nut-8.5
STROBE-nut items: nut-8.6
STROBE-nut items: nut-9
STROBE-nut items: nut-11
STROBE-nut items: nut-12.1
STROBE-nut items: nut-12.2
STROBE-nut items: nut-14
STROBE-nut items: nut-16
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
STROBE-nut items: nut-22.2
subclass of: Case studies: study description

Mills et al. 2018
type: Class
Study Name: Sociodemographic characteristics and frequency of consuming home-cooked meals and meals from out-of-home sources: cross-sectional analysis of a population-based cohort study
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.5
STROBE-nut items: nut-11
STROBE-nut items: nut-13
STROBE-nut items: nut-14
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
STROBE-nut items: nut-22.2
subclass of: Case studies: study description

Abris et al. 2018
type: Class
Study Name: Dietary diversity and nutritional adequacy among married Filipino immigrant women: The Filipino Women's Diet and Health Study(FiLWHEL)
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.3
STROBE-nut items: nut-8.5
STROBE-nut items: nut-8.6
STROBE-nut items: nut-11
STROBE-nut items: nut-12.1
STROBE-nut items: nut-12.2
STROBE-nut items: nut-13
STROBE-nut items: nut-14
STROBE-nut items: nut-17
STROBE-nut items: nut-19
STROBE-nut items: nut-20
subclass of: Case studies: study description

Chatelan et al. 2017
type: Class
Study Name: Major Differences in Diet across Three Linguistic Regions of Switzerland: Results from the First National Nutrition Survey menuCH
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.3
STROBE-nut items: nut-8.5
STROBE-nut items: nut-11
STROBE-nut items: nut-12.1
STROBE-nut items: nut-12.2
STROBE-nut items: nut-14
STROBE-nut items: nut-17
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
STROBE-nut items: nut-22.2
subclass of: Case studies: study description

Lam and Adams 2017
type: Class
Study Name: Association between home food preparation skills and behaviour, and consumption of ultra-processed foods: Cross-sectional analysis of the UK National Diet and nutrition survey (2008-2009)
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.5
STROBE-nut items: nut-8.6
STROBE-nut items: nut-11
STROBE-nut items: nut-12.1
STROBE-nut items: nut-12.2
STROBE-nut items: nut-14
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
STROBE-nut items: nut-22.2
subclass of: Case studies: study description

Llanaj et al. 2018
type: Class
Study Name: Examining food intake and eating out of home patterns among university students
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.5
STROBE-nut items: nut-9
STROBE-nut items: nut-12.2
STROBE-nut items: nut-13
STROBE-nut items: nut-14
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
subclass of: Case studies: study description

Arsenault et al. 2014
type: Class
Study Name: Seasonal differences in food and nutrient intakes among young children and their mothers in rural Burkina Faso
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.3
STROBE-nut items: nut-8.5
STROBE-nut items: nut-8.6
STROBE-nut items: nut-9
STROBE-nut items: nut-12.1
STROBE-nut items: nut-12.3
STROBE-nut items: nut-13
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
subclass of: Case studies: study description

DeCock et al. 2016
type: Class
Study Name: Sensitivity to reward is associated with snack and sugar-sweetened beverage consumption in adolescents
STROBE-nut items: nut-1
STROBE-nut items: nut-5
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.2
STROBE-nut items: nut-8.6
STROBE-nut items: nut-11
STROBE-nut items: nut-12.2
STROBE-nut items: nut-13
STROBE-nut items: nut-14
STROBE-nut items: nut-19
STROBE-nut items: nut-20
STROBE-nut items: nut-22.1
subclass of: Case studies: study description

Workicho et al. 2016
type: Class
Study Name: Household dietary diversity and Animal Source Food consumption in Ethiopia: evidence from the 2011 Welfare Monitoring Survey
STROBE-nut items: nut-1
STROBE-nut items: nut-6
STROBE-nut items: nut-7.1
STROBE-nut items: nut-7.2
STROBE-nut items: nut-8.1
STROBE-nut items: nut-8.5
STROBE-nut items: nut-11
STROBE-nut items: nut-19
STROBE-nut items: nut-22.1
subclass of: Case studies: study description

Extra list of terms for description
type: Class

Lachat C (orcid)
type: Class
subclass of: Extra list of terms for description

Benin
type: Class
subclass of: Extra list of terms for description

Cameroon
type: Class
subclass of: Extra list of terms for description

Congo
type: Class
subclass of: Extra list of terms for description

Ecuador
type: Class
subclass of: Extra list of terms for description

Kenya
type: Class
subclass of: Extra list of terms for description

Sri Lanka
type: Class
subclass of: Extra list of terms for description

Vietnam
type: Class
subclass of: Extra list of terms for description

Women
type: Class
subclass of: Extra list of terms for description

Child
type: Class
subclass of: Extra list of terms for description

Rural population
type: Class
subclass of: Extra list of terms for description

West Africa Food Composition Table (2012), FAO
type: Class
subclass of: Extra list of terms for description

Plant food product
type: Class
subclass of: Extra list of terms for description

Vertebrate animal food product
type: Class
subclass of: Extra list of terms for description

Fish food product
type: Class
subclass of: Extra list of terms for description

Rainy season
type: Class
subclass of: Extra list of terms for description