. Author manuscript; available in PMC: 2011 Jun 1.

Published in final edited form as: J Subst Abuse Treat. 2010 Mar 29;38(4):356–365. doi: 10.1016/j.jsat.2010.02.003

Table 4.

Covariates predicting outcome measures using generalized estimating equation (GEE) models

	Continuous measures					Dichotomous measures

	ASI Alcohol	ASI Drug	ASI employment	GSI	Peak density	Abstinence	Arrests

	Coef(S.E)	Coef(S.E)	Coef(S.E)	Coef. (S.E)	Coef. (S.E)	OR_adj(95%CI)	OR_adj(95%CI)

12 Step involvement scale	ns	ns	ns	ns	−1.20 (0.24)^c	1.2(1.l–1.4)^c	0.9(0.8–1.0)^b
Drinking status of social network	0.05 (0.01)^c	0.02 (0.01)^c	−0.04 (0.01)^b	ns	4.81 (0.87)^c	0.5 (0.4–0.7)^c	ns
Drug status of social network	0.03(0.01)^b	0.04 (0.01)^c	ns	0.13 (0.04)^b	6.77 (0.90)^c	0.4 (0.2–0.5)^c	1.4 (1.0–2.0)^a

Note: Coefficients and odds ratios have been adjusted for time of interview, age, race, education, marital status and sex.

p<.05;

p<.01;

p<.001