Table 4.

Univariate prediction of willingness to drink by peer norms, age, gender, prior alcohol use, and extreme peer orientation

Predictor variables	Willingness–best-friend offer		Willingness–classmate offer
	OR	[95% CI]	OR	[95% CI]
Peer norms
Injunctive norms–close friend	3.75	[3.22, 4.39]	3.54	[3.02, 4.15]
Descriptive norms–close friend	13.12	[8.62, 20.00]	6.86	[4.76, 9.90]
Descriptive norms–classmate	3.60	[2.88, 4.50]	3.52	[2.75, 4.50]
Between-subjects factors
Age	2.13	[1.81, 2.51]	1.81	[1.53, 2.13]
Gender	0.87	[0.65, 1.18]	0.84	[0.62, 1.13]
Baseline–ever sipped alcohol	2.44	[1.81, 3.30]	2.07	[1.53, 2.81]
Baseline–ever had full drink	17.13	[10.64, 27.78]	10.50	[6.62, 16.67]
Extreme peer orientation	2.66	[2.22, 3.18]	2.56	[2.16, 3.02]

Notes: All models control for baseline age. Ns from 996 to 997 (between subjects) and 2,758 to 2,772 (within subjects). All values are significant at p < .001 with the exception of gender, which was not a significant predictor. OR = odds ratio; 95% CI = 95% confidence interval.