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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Drug Alcohol Depend. 2014 Aug 28;144:93–101. doi: 10.1016/j.drugalcdep.2014.08.012

Table 1. Fixed effects regression models testing the predictive value of best friend use, peer.

Predictors Models**
1 2 3 4 5 6 7 8 9
Norms x x x x x x x
Best friend use x x x x x x x
In presence of other teens using x x x x x x x
Age + age × social predictors x x x x x x x x x
Norms × Best friend use x x x
Norms × In presence of other teens using x x x
Best friend use × In presence of other teens using x x x
Norms × Best friend use × In presence of other teens using x

norms and being in the presence of other users over time.

**

Models 1 through 9 are discussed in the Analytic Plan (Section 2.4).