Participants provided one spot urine sample, completed an administered questionnaire in Arabic, and were measured for height, weight, waist, and hip circumference.
Only 13 young people in the survey sample completed the survey in Dari or Fasi with the remainder completing the survey in English.
The British sample completed the General Health Survey, which measured the presence of twelve signs of psychological distress.
Half the sample completed a questionnaire on health behaviors and mental health indicators.
Students in our sample completed questionnaires designed to assess their perceived social support, self-esteem, academic achievement, and emotional exhaustion.
Fifty-nine percent of the sample completed an 11th grade education or less, and 59% completed high school or college.
In each center a representative sample completed a self-administered screening questionnaire composed of nine dichotomous items.
A nonclinical student sample completed self-report measures assessing pessimistic inferential style, event-specific pessimistic inferences, hopelessness, and hopelessness depression in a prospective design with three time points.
At the end of each year, the German respondents indicated how happy they were on a scale that ranged from "totally unhappy" to "totally happy". The British sample completed the General Health Survey, which measured the presence of twelve signs of psychological distress.
Students of the first sample completed the TRC-n-2, TRC-n-3 or TRC-n-4, and students of the second sample completed the TRC-e-2, TRC-e-3 or TRC-e-4, according to their grade.
A further limitation was loss to follow-up between surveys, since 68 and 63% of the original sample completed waves 2 and 3, respectively.
