The age 14 stressful life events measure was a sum score of all stressful life events endorsed by the adolescent. Stressful life events were assessed using 13 dichotomous questions, with response options of “yes” or “no”, regarding changes in the adolescent’s life such as people moving away, death of a relative/friend, having conflicts, serious illness/injury or birth of a sibling in the past two years. “Yes” responses were summed to create a total life events score.
