Table 3.

Parameter estimates, confidence intervals, and tests statistics from Cox proportional hazards regression analysis predicting number of days retained in treatment to 365 days for sample in treatment at least 90 days (N = 248)

Variable	Odds Ratio	95% CI (Lower, Upper)	Wald χ² (df=1)	p
*Demographics*
Gender	1.50	.84, 2.70	1.87	.171
Race	1.21	.56, 2.60	.24	.628
Age	.98	.95, 1.02	1.08	.298

*Baseline variables*
Smoked crack/cocaine (Lifetime)	1.05	.62, 1.77	.03	.867
On parole or probation	1.12	.63, 1.97	.15	.703
Medical composite	.31	.10, .93	4.33	.037
Employment composite	2.43	.68, 8.65	1.89	.169
Alcohol composite	.24	.03, 1.95	1.78	.183
Drug composite	2.90	.15, 56.82	.49	.482
Legal composite	3.60	1.03, 12.63	4.00	.045
Family/Social composite	3.45	.56, 21.38	1.77	.184
Psychiatric composite	.72	.13, 3.96	.14	.708
Problem Recognition (PR)	.97	.92, 1.03	.79	.375
Desire for Help (DH)	.99	.89, 1.11	.02	.894
Treatment Readiness (TR)	1.08	.99, 1.18	3.09	.079

*3-month variables*
Dose at 3 month due date	.99	.98, 1.00	3.97	.046
Treatment Satisfaction	.91	.84, .99	5.09	.024
Counselor Services	1.00	.97, 1.04	.03	.873
Problem Recognition (PR)	1.04	.99, 1.09	2.60	.107
Desire for Help (DH)	.94	.85, 1.03	2.03	.155
Treatment Readiness (TR)	.98	.91, 1.04	.55	.458
Program site			5.59	.348

Note: Test statistic for Race was obtained by collapsing data into two categories: White (n = 51) v. Black/Other (n = 197).