Table 4.
Cox proportional hazards model with random-effects for 30-day readmission
| Variable | Hazard ratio | LowerCI | UpperCI | p value |
|---|---|---|---|---|
| AMCS (ED) | 0.58 | − 0.76 | − 0.32 | < 0.01 |
| AMCS (hospitalization) | 1.19 | − 0.07 | 0.42 | 0.17 |
| Admit/no service | 0.60 | − 0.62 | − 0.40 | < 0.01 |
| AMU | 0.83 | − 0.38 | 0.00 | 0.055 |
| Gender (male) | 1.17 | 0.00 | 0.31 | 0.049 |
| Age (year) | 0.99 | − 0.01 | − 0.00 | 0.012 |
| Homeless | 0.98 | − 0.13 | 0.10 | 0.8 |
| Opioid ED visit or hospitalization | 1.00 | − 0.12 | 0.13 | 0.96 |
| Alcohol ED visit or hospitalization | 0.98 | − 0.11 | 0.07 | 0.68 |
| Random effects (within patient) | Standard deviation | Variance | ||
| 1.13 | 1.28 |
ED emergency department, AMCS (hospitalization) Addiction medicine consult service during hospital admission, AMU Addiction medicine unit, CI confidence interval