The following seven symptoms were coded positively if the participant endorsed performing the act in the prior 12 months: (1) stealing, (2) breaking into someone else’s house, building, or car, (3) destroying others’ property, (4) forced sexual activity (assessed only in males), (5) use of a weapon, (6) stealing with confrontation of a victim, and (7) physically harming others. Four symptoms were coded positively if the participant met a specific threshold: (1) running away from home—more than twice; (2) lying to guardians—five or more times; (3) being truant from school—10 or more times; and (4) fighting physically—three or more times. A total composite conduct problems symptom score was calculated by summing the 11 dichotomous items. The Cronbach’s alpha of the 11-item scale was 0.73. If four or more items were missing, the conduct problems sum was coded missing. Although a participant could omit four items and still indicate substantial conduct problems, the estimate of the participant’s level of conduct problems would be unreliable.
