Multivariate Logistic Regression Results for Odds of All-Cause 30-Day Readmission, Regressed on Receipt of Timely Outpatient Follow-Up of the Uninsured Adults with Mental Health Conditions Who Were Enrolled in the Low-Income Health Program in San Diego County from 2012 to 2013, Based on Enrollment and Claims Data
| Result | Odds Ratio | P value | CI |
|---|---|---|---|
| Timely outpatient follow-up after index admission | 0.79 | .022 | [0.65, 0.97] |
| Length of stay of index admission | 1.06 | .044 | [1.00, 1.11] |
| Length of stay of index admission–quadratic term | 1.00 | .054 | [1.00, 1.00] |
| Chronic illness and disability payment system risk score | 1.16 | .000 | [1.08, 1.25] |
| Female (ref. male) | 0.80 | .101 | [0.62, 1.04] |
| Age group (ref. 18 to 34) | |||
| 35 to 44 | 0.95 | .788 | [0.68, 1.34] |
| 45 to 54 | 0.89 | .530 | [0.60, 1.30] |
| 55 to 65 | 0.88 | .533 | [0.58, 1.33] |
| Total duration of enrollment before index admission | 0.97 | .000 | [0.95, 0.98] |
| Index admission was surgical (ref. medical) | 0.89 | .604 | [0.56, 1.40] |
| Number of evaluation and management visits 6 months prior to index admission | 1.09 | .053 | [1.00, 1.18] |
| Number of emergency department visits six months prior to index admission | 1.34 | .001 | [1.13, 1.58] |
| Substance abuse | 1.59 | .009 | [1.12, 1.27] |
| Depression | 1.10 | .370 | [0.89, 1.37] |
| Schizophrenia | 1.08 | .714 | [0.72, 1.60] |
| Bipolar disorder | 1.12 | .523 | [0.79, 1.60] |
| Race (ref. white) | |||
| African American | 0.75 | .031 | [0.57, 0.97] |
| Latino | 0.98 | .858 | [0.76, 1.26] |
| Asian American | 0.47 | .059 | [0.22, 1.03] |
| Other | 2.83 | .118 | [0.77, 10.44] |
| Missing | 1.02 | .913 | [0.73, 1.41] |
| Constant for outpatient visit model | 0.11 | 0.000 | [−2.97, −1.43] |
CI, confidential interval.