Table 4.

Results from multi-level modeling 11th grade: frequency drinking & driving/riding last 30 days

Fixed effect	Coefficient	se	t Ratio
Model for Individuals (N = 3,073)
Commercial sources	0.056	0.006	8.81**
Friends >21 source	0.129	0.008	14.63**
Friends <21 source	0.100	0.013	7.40**
Parent source	−0.082	0.016	−5.03**
Stole from home source	−0.005	0.015	−0.34
Model for Communities (N = 93)
Commercial access rate (CAR)	0.078	0.024	3.19**
Minor in possession enforcement (MIP)	0.032	0.021	1.49
Cross-Level Effects
CAR → Commercial source	−0.027	0.006	−4.06**
CAR → Friend > 21 source	0.044	0.008	5.09**
CAR → Friend < 21 source	−0.084	0.013	−6.50**
CAR → Parent source	0.030	0.016	1.79+
CAR → Home source	0.057	0.016	3.47**
MIP → Commercial source	−0.036	0.005	−6.22**
MIP → Friend > 21 source	0.056	0.008	6.68**
MIP → Friend <21 source	−0.022	0.014	−1.52
MIP → Parent source	−0.041	0.018	−2.25**
MIP → Home source	−0.017	0.016	−1.10

Variance
Random effect	Component	se	t-value
Community means, u0j	0.028	0.008	3.26**
Commercial source slopes, u1j	0.042	0.014	3.01**
Friends >21 source slopes, u2j	0.013	0.004	3.21**
Friends <21 source slopes, u3j	0.042	0.012	3.47**
Parent source slopes, u4j	0.028	0.013	2.13*
Stole from home source slopes, u5j	0.055	0.019	2.91**
Individual students, rij	0.523	0.014	36.21**

⁺p < .10,

^*p < .05,

^**p < .01