Table 2 Inclusion and exclusion criteria for the review

Setting

Any country

Studies where specified data (see below) was collected during or after 1980

Studies reporting on data collected prior to 1980

Participants

Those aged between 13 and 30 years, inclusive

Those aged below 13 years of age or above 30 years of age

Participant groups selected based on a pre-existing health condition (including obesity, eating disorders, malnutrition) or pregnancy

Studies where participants are only competitive athletes

Outcomes

A measure of diet, including:

- Energy intake

- Intake of macronutrients or micronutrients

- Intake of particular food groups

Studies including no dietary outcomes

Studies reporting tracking of dietary behaviours only with no data on absolute change in behaviour

Studies reporting solely on alcohol intake

Studies reporting on eating disorders or weight reduction behaviour

Studies reporting on diet quality indices or dietary patterns only

Study type

Longitudinal prospective quantitative studies, with data reported including on specified outcomes at at least 2 time points (minimum 1 year apart) where mean age of the cohort is between ages 13 and 30 inclusive

Cross-sectional studies

Intervention studies/trial analyses

Case-control studies

Retrospective studies

Qualitative studies

Reviews

Publication type

Journal article

Conference abstract, study protocol, report, dissertation, book and professional journal

Language

English

All other languages