Table 2

Smoking prevalence predicted from tobacco source and access measures, multi-level modelling for 11th grade

Fixed effect	Regression coefficient	SE	t Ratio
Model for individuals (n = 4474)
Commercial sources	0.079	0.031	2.49*
Grey market sources	0.064	0.080	0.79
Social sources	0.742	0.029	25.43**
Stole from home	0.040	0.050	0.81
Model for communities (n = 75)
Population smoking mean	0.179	0.012	14.54**
Year	−0.003	0.008	−0.54
Merchant sales rate (MSR)	0.079	0.024	3.16**
Cross level effects
MSR → commercial source slopes	0.267	0.095	2.80**
MSR → grey market source slopes	−0.131	0.240	−0.55
MSR → social source slopes	−0.137	0.066	−2.05*
MSR → stole from home slopes	0.238	0.159	1.49

Random effect	Variance component	SE	t Value
p<0.05, *p<0.01.
Community smoking means	0.003	0.001	3.48**
Commercial source slopes	0.040	0.011	3.36**
Grey market source slopes	0.067	0.037	1.81*
Social source slopes	0.027	0.007	3.79**
Stole from home slopes	0.045	0.018	2.45*
Individual students	0.048	0.001	44.82**