Table 3.

Findings One to Three Years Following High School Graduation

Variable	Intervention (prevalence [%])	Control (prevalence [%])	Odds Ratio (95% confidence Interval)†
Marijuana Use
Used ≥40 times in last year	2%	7%	0.26** (0.09–0.82)
Used ≥40 times in lifetime	5%	13%	0.38** (0.18–0.79)**
Alcohol Use
Use ≥6 times in last 3 months	27%	41%	0.55** (0.36–0.84)
Use ≥20 times in last year	25%	35%	0.61* (0.39–0.95)
Cigarette Use
Used ≥20 times in last year	8%	12%	0.63 (0.33–1.22)
Used ≥40 times in lifetime	9%	16%	0.52* (0.28–0.94)

^†Control participants were used as the reference group in calculating the odds ratio, and calculations were controlled for graduation year. An odds ratio < 1 indicates ATHENA intervention participants were less likely to engage in the behavior.

^*p<0.05,

^**p<0.01