Table 5:
GEE model results & difference-in-difference estimates
| Outpatient admissions | Intensive Outpatient admissions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| # Days Waiting for Treatment | Mental Disorder History | Substance use severity | # Days Waiting for Treatment | Mental Disorder History | Substance use severity | ||||||||
| Estimate | SE | Estimate | SE | Estimate | SE | Estimate | SE | Estimate | SE | Estimate | SE | ||
| Intercept | 1.82** | 0.07 | −1.55** | 0.09 | 0.11** | 0.01 | 0.75** | 0.16 | −1.27** | 0.26 | 0.18** | 0.01 | |
| Incentive Group | 0.00 | 0.07 | 0.20 | 0.13 | 0.00 | 0.00 | 0.55** | 0.12 | 0.17 | 0.26 | −0.01 | 0.00 | |
| Post Period | 0.50** | 0.10 | 0.21 | 0.12 | 0.00 | 0.02 | 0.88** | 0.15 | −0.05 | 0.36 | 0.00 | 0.01 | |
| Incentive*Post | 0.06 | 0.10 | -0.07 | 0.20 | -0.01 | 0.00 | -0.30 | 0.19 | 0.44 | 0.40 | 0.01 | 0.01 | |
| Age at admission (Ref: 18- | |||||||||||||
| 25–34 | 0.14** | 0.04 | 0.07** | 0.03 | 0.02** | 0.00 | 0.35** | 0.07 | 0.07 | 0.07 | 0.02** | 0.01 | |
| 35–44 | 0.11** | 0.03 | 0.12** | 0.04 | 0.04** | 0.00 | 0.11** | 0.09 | 0.18** | 0.09 | 0.02** | 0.01 | |
| 45+ | 0.09* | 0.04 | 0.25** | 0.05 | 0.05** | 0.01 | 0.15** | 0.08 | 0.18** | 0.05 | 0.02** | 0.00 | |
| Female | −0.04* | 0.02 | 0.57** | 0.03 | 0.00 | 0.00 | 0.02 | 0.06 | 0.66** | 0.06 | 0.00 | 0.00 | |
| Marital status (Ref: single): | |||||||||||||
| Never Married | 0.05* | 0.02 | 0.19** | 0.04 | 0.04** | 0.00 | −0.02 | 0.06 | 0.04 | 0.07 | 0.03** | 0.00 | |
| Separated, Divorced, Widowed | 0.05* | 0.02 | 0.19** | 0.03 | 0.04** | 0.00 | 0.11 | 0.05 | 0.07 | 0.07 | 0.03** | 0.00 | |
| Highest Grade Completed (Ref: HS): | |||||||||||||
| < High School | 0.06* | 0.02 | 0.00** | 0.06 | 0.03** | 0.00 | 0.12* | 0.05 | −0.13** | 0.08 | 0.02** | 0.00 | |
| >High School | −0.04 | 0.04 | 0.18** | 0.03 | −0.03** | 0.00 | −0.13** | 0.08 | 0.32** | 0.07 | −0.03** | 0.00 | |
| Medicaid as Expected Primary Payment | −0.05 | 0.07 | 0.09 | 0.06 | 0.04** | 0.00 | −0.03 | 0.10 | 0.24* | 0.10 | 0.03** | 0.01 | |
| Primary Referral Source: Criminal Justice System | 0.40** | 0.08 | −0.44** | 0.04 | −0.03** | 0.00 | 0.85** | 0.15 | −0.43** | 0.07 | 0.01 | 0.01 | |
| Primary Drug Used (Ref: Alcohol): | |||||||||||||
| Opioids | −0.04 | 0.05 | −0.37** | 0.03 | 0.09** | 0.01 | 0.10 | 0.11 | −0.40** | 0.07 | 0.09** | 0.00 | |
| Other | 0.07 | 0.05 | −0.01** | 0.10 | 0.06** | 0.01 | −0.03 | 0.10 | −0.11** | 0.08 | 0.05** | 0.01 | |
| Received Traditional Wrap-around services during treatment | 0.12 | 0.08 | −0.02 | 0.03 | 0.05** | 0.01 | 0.57** | 0.16 | 0.46** | 0.11 | 0.03** | 0.01 | |
| Prior drug/alcohol treatment episodes | −0.20** | 0.07 | 0.47** | 0.04 | 0.01** | 0.00 | −0.18 | 0.11 | 0.56** | 0.06 | 0.01 | 0.01 | |
| Mental disorder history | −0.01 | 0.01 | -- | -- | 0.05** | 0.00 | −0.22* | 0.09 | -- | -- | 0.04** | 0.00 | |
| Substance use severity | 0.25 | 0.29 | 3.33** | 0.26 | -- | -- | 0.22 | 0.42 | 2.53** | 0.25 | -- | -- | |
| Marginal effect of interaction: | |||||||||||||
| INC*Post (Mean, SE) | −0.02 | 0.04 | -- | -- | -- | -- | 0.07 | 0.08 | -- | -- | -- | -- | |
| Difference-in-difference estimate (p value) | 0.68 | (0.55) | −1.89 | (0.72) | −0.009 | (0.06) | −0.11 | (0.11) | 10.4 | (0.27) | 0.008 | (0.46) | |
*
p<0.05
**
p<0.01