Table 1.

Baseline demographic and drinking characteristics of participants

	Screening Sample N = 1407		Eligible Sample N = 810		Consented Sample N = 509
Variable	Ineligible n = 597	Eligible n = 810	Not Reached or Not Consented n = 301	Consented n = 509	Incomplete Follow-up Data n = 154	Complete Follow-up Data n = 344
Gender (% female)	70%	61%**	55%	65%**	63%	66%
Ethnicity (% White)	72%	88%**	86%	89%	90%	89%
Year (% freshmen)	58%	55%**	54%	55%**	53%	56%
Residence (% on campus)	79%	83%**	78%	86%**	85%	87%
Greek status (% non-Greek)	91%	78%**	77%	79%	72%	82%*
Age	19.7 (3.1)	19.3 (1.4)**	19.5 (2.1)	19.2 (0.8)*	19.3 (0.9)	19.2 (0.7)
Drinks/week	3.5 (5.5)	19.2 (13.6)**	19.2 (15.2)	19.2 (12.6)	20.9 (13.4)	18.5 (12.1) *
Drinks/drinking day	1.5 (1.7)	5.6 (3.2)**	5.9 (3.8)	5.7 (2.7)	5.7 (2.9)	5.6 (2.6)
Heavy drinking frequency	1.0 (2.0)	6.8 (4.4)**	6.1 (4.5)	7.2 (4.4)**	7.9 (4.5)	6.8 (4.3) *
Peak BAC	0.09 (0.07)	0.21 (0.09)**	0.20 (0.10)	0.21 (0.09)	0.21 (0.08)	0.21 (0.09)
RAPI total	2.1 (3.7)	7.0 (6.0)**	6.4 (5.3)	7.4 (6.3)*	7.2 (5.9)	7.5 (6.4)

Note. Values indicate the means (and standard deviations) unless otherwise noted. All drinking variables sample the previous month. BAC = blood alcohol concentration. RAPI = Rutgers Alcohol Problems Index.

^*p< .05

^**p< .01