Prevalence of and Factors Associated With Substance Use Among Canadian Medical Students

; cannabis in past 12 months: OR, 1.41; 95% CI, 1.19-1.69; NPS in past 12 months: OR, 1.72; 95% CI, 1.22-2.42). Lower age was associated with self-reported cannabis use in the past 12 months (OR, 0.95; 95% CI, 0.93-0.97) and excessive alcohol use (OR, 0.96; 95% CI, 0.94-0.98), whereas older students were more likely to self-report cigarette use (OR, 1.17; 95% CI, 1.14-1.21) (Table