Table 2.

Patterns of cannabis and other drug use

	CD/MD	CD	p value
Cannabis use
Age of first use (years)	15.92 ±4.56	15.26 ±3.15	t₁₀₄= .868; p=.39
Age of regular use	19.33 ±5.86	18.25 ±4.10	t₁₀₃= 1.098; p=.28
Number days per week used	6.44 ±1.65	6.58 ±.84	t₁₀₅= -.551; p=.58
Amt of cannabis used per using day in prior 7 days (joints)	6.57 ±6.94	5.96 ±9.16	t₁₀₄= .389; p= .70
Alcohol use
Number days per week used	1.83 ±2.37	1.69 ±2.21	t₁₀₅= .328; p=.74
Amt of alcohol used per using day in prior 7 days (drinks)	2.63 ±3.36	2.24 ±2.89	t₁₀₆=.645; p=.52
*Cocaine/Crack use**
Number of days per week used	.09 ±.44 .13 ±.95*	.19 ±.55 .04 ±.19*	t₁₀₆=-.959; p=.34 t₁₀₆=.700; p=.49*
*Amt of cocaine/crack used per using day in prior 7 days (dollar amount)**	4.07 ±20.69 2.78 ±20.41*	3.74 ±14.04 1.94 ±13.61*	t₁₀₆=.098; p=.92 t₁₀₆=.250; p=.80*