| Inclusion criteria | Exclusion criteria |
---|---|---|
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 30Â years, inclusive | Those aged below 13Â years of age or above 30Â 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 1Â 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 |