Table 3 Multivariate Regression of Chronic Disease on Addiction Treatment Utilization (N = 498)

Any Addiction Treatment

Outpatient Days

Residential Nights

Independent Variable

AOR (95% CI)

IRR (95% CI)

IRR (95% CI)

Chronic disease (Katz)

   None

Referent

Referent

Referent

   One, of lower severity only

0.88 (0.60, 1.28)

0.86 (0.41, 1.81)

0.68 (0.31, 1.49)

   One of higher severity or multiple conditions

1.29 (0.89, 1.88)

1.14 (0.55, 2.38)

0.63 (0.23, 1.69)

Age

0.99 (0.98, 1.01)

1.00 (0.97, 1.04)

0.99 (0.96, 1.03)

Female

1.23 (0.89, 1.70)

1.74 (0.95, 3.20)

0.68 (0.31, 1.48)

Race

   Black

0.57 (0.38, 0.85)**

0.47 (0.21, 1.05)

0.22 (0.08, 0.64)**

   Hispanic

0.77 (0.49, 1.20)

1.34 (0.62, 2.89)

0.55 (0.22, 1.36)

   Other

0.61 (0.32, 1.15)

0.75 (0.22, 2.57)

0.77 (0.27, 2.24)

   White

Referent

Referent

Referent

Substance dependence

   Alcohol dependent & recent heavy use

0.80 (0.52, 1.24)

0.78 (0.33, 1.83)

1.13 (0.50, 2.57)

   Drug dependent & recent use

0.86 (0.61, 1.22)

0.87 (0.39, 1.95)

0.48 (0.21, 1.11)

   Both

Referent

Referent

Referent

Recruitment site

   Detoxification program

0.82 (0.57, 1.17)

0.37 (0.19, 0.73)**

1.11 (0.48, 2.57)

   Other

Referent

Referent

Referent

Criminal justice involvement (past 3 mo)

0.98 (0.73, 1.31)

1.26 (0.70, 2.27)

1.20 (0.66, 2.18)

Homeless (past 3 mo)

1.07 (0.80, 1.43)

0.95 (0.53, 1.72)

1.06 (0.58, 1.95)

Unemployed (past 3 mo)

1.07 (0.79, 1.45)

1.60 (0.79, 3.24)

0.85 (0.47, 1.54)

Health insurance

2.04 (1.24, 3.36)**

3.06 (0.88, 10.68)

2.54 (0.96, 6.71)

Current smoker

0.89 (0.61, 1.30)

0.79 (0.34, 1.81)

1.48 (0.53, 4.11)

Anxiety (Beck)

   Low

Referent

Referent

Referent

   Moderate

1.45 (0.99, 2.14)

1.71 (0.80, 3.66)

2.15 (0.97, 4.75)

   Severe

1.77 (1.23, 2.53)**

2.12 (1.02, 4.41)*

2.11 (0.94, 4.75)