Table 2.

Mediation Criterion 1: Relationships Between CICH Participation and Potential Mediators of ED Use

Dependent variable: potential mediators of ED use	OR (95% CI) a	βb	t c	p
Recently homeless d	0.29 (0.23 – 0.37)	−1.22	−10.16	<.001
Access to a case manager d	3.15 (2.37 – 4.19)	1.15	7.92	<.001
Access to primary medical provider d	1.28 (0.97 – 1.69)	0.25	1.77	0.077
Access to MH/SA provider d	1.7 (1.38 – 2.09)	0.53	4.97	<.001
Used outpatient medical services d	1.1 (0.91 – 1.33)	0.09	0.97	0.335
Used outpatient MH/SA services d	1.34 (1.11 – 1.63)	0.29	2.98	0.003
SF12 physical health e		0.40	0.90	0.371
SF12 mental health e		0.03	0.08	0.935
ASI alcohol use f		−0.003	−0.39	0.696
ASI drug use f		−0.004	−1.16	0.248

Note: Longitudinal GEEs for service outcomes in column 1 were adjusted for baseline values of the dependent variable as well as characteristics that significantly differed (P<.15) in CICH and comparison cohorts (gender, race, four or more episodes of homelessness in the prior two years, number of mental health problems, SF12 mental health measure). In each case, the dependent variable is the outcome in column 1. Both odds ratios and regression coefficients reflect the effect of participation in CICH on the outcome.

^aOdds Ratio for CICH vs Comparison cohort in predicting potential mediators of ED use.

^bRegression coefficient for CICH vs Comparison cohort.

^ct-statistic

^dPast 90 days

^eSF12 = Medical Outcomes Study Short Form-12. Possible scores ranging from 0 to 100, with higher scores indicating better health

^fASI = Addiction Severity Index. Possible scores ranging from 0 to 1, with higher scores indicating greater addiction severity