Table 2. Longitudinal Logistic Regression Models of Cocaine Use (N=145).

	Cocaine Use based on Qualitative Urine Toxicology						Cocaine Use based on Self-Reports
	Model 1 (Bi-variable)			Model 2 (Multi-variable)			Model 1 (Bi-variable)			Model 2 (Multi-variable)
	OR	SE	p	AOR	SE	p	OR	SE	p	AOR	SE	p
Treatment Groups
P (control, reference)
FV	0.67	0.32	0.40	0.46	0.30	0.23	0.91	0.40	0.83	0.26	0.20	0.08
PV	0.24	0.11	<0.00	0.43	0.27	0.17	0.43	0.20	0.06	0.15	0.12	0.02
F	0.82	0.38	0.66	0.84	0.48	0.75	1.43	0.60	0.39	0.36	0.26	0.16
Treatment Group X Time
P (control, reference)
FV				0.99	0.01	0.64				1.11	0.06	0.07
PV				0.98	0.02	0.34				1.10	0.07	0.16
F				1.02	0.01	0.15				1.14	0.06	0.02
Age (years)	1.03	0.02	0.18				1.01	0.02	0.47
Education (years)	1.06	0.11	0.59				0.95	0.09	0.63
Race
White (reference)
Black	0.67	0.21	0.19				1.23	0.38	0.52	1.06	0.34	0.86
Other	0.43	0.50	0.46				0.07	0.07	0.01	0.06	0.03	<0.00
Gender
Male (reference)
Female	2.44	0.78	<0.00	2.46	0.81	<0.00	3.43	1.07	<0.00	3.64	1.15	<0.00
Legal Problems
No (reference)
Yes	1.35	0.51	0.42				1.10	0.38	0.79
Employed
No (reference)
Yes	0.53	0.19	0.08				0.50	0.19	0.07

NOTE: OR=Odds ratio, SE=Standard error, AOR=Adjusted odds ratio