Table 2.
Multiple Logistic Regression of Predictors for 30-Day Readmission
| Variablea | 30-d readmission risk | OR (95% CI)b | P value |
|---|---|---|---|
| Number of address changes in the year before index hospitalization (continuous) |
1.13(1.05–1.21) | .001 | |
| Zero address changes | 24% | ||
| 1 address change | 28% | ||
| ≥2 address changes | 30% | ||
| Number of admissions in the year before index hospitalization (continuous) | 1.14(1.05–1.24) | .002 | |
| Zero admissions | 20% | ||
| 1 admission | 25% | ||
| ≥2 admissions | 35% | ||
| Medicaid insurance | 33% | 1.53(1.10–2.13) | .012 |
| Platelet count | 0.50 (0.35–0.72) | <.001 | |
| <77,000/μL | 28% | ||
| 77,000–112,000/μL | 18% | ||
| >112,000/μL | 30% | ||
| ALT level | 2.56 (1.09–6.00) | .031 | |
| ≤9 U/L | 48% | ||
| >9 U/L | 26% | ||
| Hematocrit | 1.63(1.17–2.27) | .004 | |
| ≤30% | 37% | ||
| >30% | 22% | ||
| Sodium level | 1.78(1.14–2.80) | .012 | |
| ≤130 mEq/L | 40% | ||
| >130 mEq/L | 25% | ||
| MELD score (continuous) | 1.04(1.01–1.06) | .004 |
a
All variables were collected within 48 hours of admission from the EMR.
b
ORs greater than 1.0 are associated with a higher risk of 30-day readmission, and ORs less than 1.0 are associated with a lower risk of readmission.