Table 3.
Cox Proportional Hazards Analysis of Risk of Readmission
| Variables | Hazard Ratio | 95% CI | P-value |
|---|---|---|---|
| Age (reference:18–30) | 0.989 | 0.985–0.993 | <0.001 |
| Gender (reference: Male) | 1.129 | 1.057–1.206 | <0.001 |
| Education (reference: University) | |||
| Illiteracy | 0.749 | 0.478–1.174 | 0.208 |
| Primary | 0.905 | 0.784–1.045 | 0.174 |
| Middle school | 0.970 | 0.888–1.060 | 0.503 |
| High school | 1.128 | 1.035–1.230 | 0.006 |
| Medical settlement mode (reference: Own expense) | |||
| Local medical insurance | 1.710 | 1.588–1.842 | <0.001 |
| Non-local medical insurance | 1.247 | 1.001–1.553 | 0.049 |
| Diagnosis (reference: Schizophrenia) | |||
| Depression | 0.975 | 0.862–1.103 | 0.693 |
| Bipolar disorder | 1.148 | 1.067–1.235 | <0.001 |
| Length of stay (reference: ≤20) | 1.000 | 1.000–1.000 | 0.704 |
| Number of previous admissions (reference:0) | 1.279 | 1.247–1.311 | <0.001 |
| Charlson comorbidity index score (reference:0) | |||
| 1 | 1.124 | 1.009–1.253 | 0.034 |
| 2 | 1.548 | 1.321–1.814 | <0.001 |
| ≥3 | 1.645 | 1.360–1.990 | <0.001 |