Table 3.

Survival analysis predicting admission to detox in year post-index

	Any Detox Admission
	Hazard Ratio	95% CI
Engagement	0.87**	(0.78, 0.96)
Female	0.98	(0.88, 1.09)
Age (reference: Ages 36–44)
18–25	1.08	(0.94, 1.24)
26–35	0.98	(0.86, 1.11)
45+	0.88	(0.76, 1.03)
Race/Ethnicity (reference: White)
Latino	0.89	(0.75, 1.05)
Black	1.01	(0.84, 1.21)
Other Race/Ethnicity	0.76	(0.54, 1.09)
Education (reference: High School Grad)
Less than H.S.	0.90	(0.80, 1.01)
More than H.S.	0.86*	(0.76, 0.98)
Married	1.01	(0.87, 1.19)
Homeless	1.10	(0.95, 1.29)
Employed	0.88*	(0.78, 0.99)
Insurance(Reference: Private/Other)
No Insurance	1.28**	(1.09, 1.51)
Public	1.30**	(1.10, 1.53)
Referral Source (reference: Self/Family)
Criminal Justice	0.82**	(0.71, 0.94)
Health Professional	1.04	(0.88, 1.22)
Substance Abuse Tx	1.08	(0.94, 1.23)
Other	0.84	(0.69, 1.03)
Prior mental health treatment	0.94	(0.85, 1.05)
Prior year residential substance abuse Tx	1.03	(0.80, 1.34)
Prior year outpatient substance abuse Tx	1.38**	(1.21, 1.58)
Prior Year Detox (reference: No Detox Prior Year)
1 Detox admission in prior year	2.97**	(2.60, 3.38)
2+ Detox admissions in prior year	5.43**	(4.77, 6.18)
Alcohol Severity (reference: Low)
Middle Tercile	0.97	(0.85, 1.10)
Highest Tercile	1.16*	(1.02, 1.32)
Cocaine Severity (reference: Low)
Middle Tercile	1.17*	(1.02, 1.35)
Highest Tercile	1.21**	(1.06, 1.39)
Heroin Severity (reference: Low)
Highest Tercile	1.98**	(1.76, 2.22)
Marijuana Severity (reference Low)
Middle Tercile	0.80**	(0.70, 0.90)
Highest Tercile	0.77**	(0.67, 0.88)
Facility Engagement Rate	1.32	(0.71, 2.47)

^*p < .05,

^**p < .01