Table 1.

Group demographics for non-cannabis using controls (controls) and long-term heavy cannabis users (cannabis users).

Variable	Controls (N = 16)	Cannabis Users (N = 17)
	Mean (± SD)	Mean (± SD)	t/X2 Value	p
Age (years)	27.1 (6.3)	25.1 (3.1)	1.17	n.s.
Full I.Q.	113.81 (7.4)	105.59 (15.1)	1.96	n.s.
Sex			1.59	n.s.
Male	5	9
Female	11	8
Cigarette Smokers	12.5 %	52.9%	6.07	0.03
Caffeine (mg/day)	103.1 (72.1)	108.7 (69.5)	0.98	n.s.
Alcohol AUDIT Score	3.3 (2.0)	4.8 (2.7)	1.76	n.s.
Spielberger State Anxiety	27.0 (10.0)	26.9 (6.3)	0.56	n.s.
Beck’s Depression	2.5 (3.2)	4.0 (2.9)	1.22	n.s.
Cannabis Use:
Age of onset (years)		14.9 (2.0)
Years of Total Use		10.2 (3.3)
Days per month		29.3 (1.4)
Times per day		4.3 (4.4)
Years at current use level		5.6 (3.3)
Hours since last use		13.0 (1.7)