TABLE 3.

Comparison of changes in the odds of students’ risk behaviours in the intervention and control groups 4 months later.

Variable	Intervention decrease		Control decease		Unadjusted			Adjusted
	n	Total	n	Total	OR	95% CI	p	OR	95% CI	p
Carry a weapon	91	809	54	721	1.6	1.1–2.5	0.02	1.8	1.2–2.6	0.002
Carry a gun	49	809	32	721	1.4	0.9–2.2	0.2	1.5	0.9–2.5	0.09
Days smoked cigarette	140	809	116	723	1.1	0.7–1.5	0.7	1.1	0.8–1.4	0.6
Cigarettes smoked/day	176	805	142	720	1.1	0.8–1.6	0.6	1.1	0.9–1.4	0.4
Day drank alcohol	227	810	165	722	1.2	0.8–1.8	0.3	1.2	0.9–1.6	0.3
Days 5+ drinks	173	813	139	721	1.1	0.8–1.5	0.5	1.0	0.8–1.3	0.9
Drinks in a row	202	812	167	723	1.1	0.8–1.6	0.6	1.0	0.8–1.3	0.9
Marijuana times	84	809	81	725	0.9	0.5–1.7	0.8	0.9	0.6–1.3	0.5
Alcohol before sex	27	305	18	237	1.2	0.6–2.2	0.6	1.3	0.6–2.6	0.5
Condom before sex	60	300	40	232	1.2	0.7–1.9	0.5	1.1	0.6–1.8	0.8

OR, odds ratio; CI, confidence interval.