Four sets of analyses were performed. The first set examined the effects of obesity (OB-: BMI < 30 kg/m2, OB+: BMI ≥30), childhood Conduct Disorder problems (48, 49) (CP− : < 2 problems, CP+: ≥2 problems), and smoking (9, 50) (Smoking+: never or former, Smoking+: daily smoking during past year) in a simple 2 × 2 × 2 factorial design. The 8 groups of subjects were initially compared on background characteristics using Pearson’s χ2 Test to evaluate group equivalence on categorical variables and a three- factor ANOVA for continuous variables.
