. Author manuscript; available in PMC: 2010 May 11.

Published in final edited form as: Crim Justice Behav. 2009;36(9):935–953. doi: 10.1177/0093854809338769

Table 5. Time to First Drug Use for Participants during the 26-Week Intervention (Cox Regression Survival Analysis, with Baseline Covariates).

	β Coefficient	Standard Error	p	Odds Ratio (OR)	95% Confidence Interval of OR
Combined¹	.23	.17	.18	1.26	.90	1.77
Drug Testing¹	-.14	.18	.42	.87	.62	1.22
Treatment Plan¹	-.01	.16	.94	.99	.73	1.35
Gender (female)	.08	.12	.49	1.09	.86	1.38
Years of education	-.01	.06	.83	.99	.87	1.12
BSI²	-.02	.20	.92	.98	.66	1.45
Months of prior incarceration²	-.00	.00	.90	1.00	.99	1.01

Compared to Standard Treatment group

Continuous variable