TABLE 1.

Sample characteristics by ethnicity, mean (SD)

Variable	Total (N = 5,845)	African American (N = 394)	White (N = 5,451)	Cohen’s d (CI)
Age	18.5 (0.76)	18.63 (0.91)*	18.53 (0.75)	.13 (.11, .15)
Gender (male, %)	39.32	35.03	39.63
Dorm (living in dorm, %)	84.57	77.66**	85.07
GPA	3.30 (0.57)	3.00 (0.61)**	3.32 (0.56)	.57 (.55, .58)
Past-30-day drinking behaviors
Drinking frequency (days)	4.79 (4.90)	3.19 (4.29)**	4.90 (4.92)	.35 (.23, .48)
Greatest number of drinks	6.03 (5.30)	3.50 (4.37)**	6.22 (5.31)	.52 (.38, .65)
Average number of drinks	3.70 (3.12)	2.07 (2.13)**	3.76 (3.15)	.55 (.47, .63)
Binge drinking (days)	2.17 (1.39)	1.58 (1.06)**	2.20 (1.41)	.45 (.41, .48)
Positive expectancies	3.23 (0.69)	3.00 (0.81)**	3.25 (0.68)	.36 (.35, .38)
Negative expectancies	1.74 (0.64)	1.86 (0.77)**	1.73 (0.63)	.20 (.19, .22)
Injunctive norms	3.23 (0.80)	3.57 (0.86)**	3.21 (0.79)	.45 (.43, .47)
Descriptive norms	0.00 (0.88)	−0.43 (0.90)**	0.03 (0.87)	.52 (.51, .55)
Disapproval of others drinking	3.72 (0.86)	4.00 (0.82)**	3.70 (0.86)	.35 (.33, .37)

^*p < .05,

^**p < .00.