Table 5.

Individual and classroom level effects of impulsivity, peer susceptibility, alcohol popularity norms, and their interaction on adolescents’ alcohol use at T3

	b	SE	95% CI	Deviance (AIC/BIC)
Random Intercept				1570/1586
Variance alcohol T3	3.76**	0.94	[1.34–6.18]
Model 1				9867/9950
Variance alcohol T3	0.95**	0.19	[0.64–1.25]
Alcohol T2	0.43**	0.10	[0.26–0.59]
Sex	0.51	0.31	[0.04–1.01]
Within-effect peer susceptibility	0.14	0.25	[−0.27–0.55]
Within-effect impulsivity	1.02**	0.31	[0.51–1.52]
Education	−0.33**	0.09	[−0.48–−0.18]
Model 2				9856/9944
Variance alcohol T3	0.69**	0.20	[0.37–1.16]
Alcohol T2	0.40**	0.11	[0.22–0.57]
Sex	0.45	0.31	[−0.06–0.96]
Within-effect peer susceptibility	0.20	0.26	[−0.23–0.63]
Within-effect impulsivity	0.99**	0.31	[0.48–1.51]
Education	−0.25**	0.09	[−0.41–−0.10]
Popularity norms alcohol	1.73**	0.56	[0.81–2.65]

Model 1 = model with individual main effects and education; Model 2 = model with alcohol popularity norms added

*p < 0.05; **p < 0.01