Table 1.

Participant Characteristics Stratified by Age

	Ages 17 to 20 n = 558		Ages 21 to 24 n = 710		Ages 25 to 32 n = 96		Full Sample n = 1364
Variable	Mean or %	SD	Mean or %	SD	Mean or %	SD	Mean or %	SD
Age	19.26	0.76	21.56	0.84	27.08	2.17	21.01	2.22
% female	46.6		36.3		32.3		40.2
% White, non-Hispanic	79.9		78.0		87.5		79.5
% Current student	96.4		83.1		33.3		85.0
Estimated BAC	.135	.076	.120	.076	.099	.074	.124	.077
Time spent drinking (in hours)	2.79	1.62	3.09	1.97	3.23	1.90	2.98	1.84
AUDIT Consumption	7.57	2.31	7.40	2.43	6.46	3.52	7.40	2.49
AUDIT Dependence/consequences	6.19	5.52	5.79	4.93	4.74	4.93	5.88	5.19
Stimulatory effects	7.22	2.19	7.19	2.16	5.94	2.75	7.12	2.24
Sedative effects	2.50	2.21	2.29	2.21	2.40	2.63	2.385	2.24

Note. SD = standard deviation.