Table 1.

Participant characteristics at project baseline.

	Low Frequency Drug Users (n = 41) M (SD) or %	High Frequency Drug Users (n =39) M (SD) or %
Age (range 16 to 19)	17.6 (1.0)	17.4 (0.9)
% Female	27%	31%
% Caucasian	79%	76%
% with familial substance use disorder	29%	36%
% reporting more than one cigarette smoked in the past month *	10%	33%
Average cigarettes smoked per month (for those reporting past smoking)	11.8 (13.5)	9.5 (8.3)
Parent annual salary ($ thousands)	123.8 (67.5)	151.6 (124.6)
WRAT-3 Reading standard score	110.0 (6.7)	107.3 (7.6)
WASI Vocabulary T-score	59.0 (8.8)	58.8 (7.5)
Grade point average	3.5 (0.6)	3.1 (0.8)
Beck Depression Inventory total *	1.6 (2.3)	3.1 (3.3)
Spielberger State Anxiety total	25.7 (6.8)	29.4 (7.4)

^*Group difference p < .05