Intervention effects on secondary outcomes
REGRESSION, SECONDARY
For mood effects of smoking, students in the intervention group showed improvement compared with the control group (OR: 0.68; 95% CI: 0.47;0.99). For all other secondary outcomes, no statistically significant differences were found between the intervention and control group (Table 
Logistic regression analyses of the associations between the intervention group (versus the control group) and secondary outcomes of the Focus intervention at follow-up using multiple imputation of missing data (N = 1,659)*adjusted for random effects (class), stratification variable (school type), gender, socioeconomic status, age, baseline variable if available, and baseline smoking status