Table 3. Frequency of substance use before and after prohibition.

^*P<0.05 considered statistically significant

Frequency of use	Before prohibition, n (%), (n = 200)	After prohibition, n (%), (n = 172)	P-value*
Daily	100 (50%)	120 (69.8%)	0.008
Weekly	60 (30%)	80 (46.5%)	0.021
Monthly	40 (20%)	40 (23.3%)	0.421