Table 2.
Descriptive Summary of the Top Eight Predictors of 30-Day Readmission by Readmission and No Readmission Groups
| Variable | Readmission (N=1254) | No Readmission (N=10,087) | P-value |
|---|---|---|---|
| TOTCHG (Total charges): Mean (SD) | 131,004.0 (200,377.1) | 69,749.6 (130,414.2) | <0.001t |
| AGE (Age in years at admission): Mean (SD) | 49.3 (20.5) | 41.5 (20.6) | <0.001t |
| LOS (Length of stay): Mean (SD) | 13.7 (19.0) | 7.2 (14.1) | <0.001t |
| NDX (Number of diagnosis on this record): Median (IQR) | 14.0 (9.0, 19.0) | 8.0 (4.0, 13.0) | <0.001w |
| NCHRONIC (Number of chronic conditions): Median (IQR) | 6.0 (3.0, 8.0) | 3.0 (1.0, 5.0) | <0.001w |
| NPR (Number of procedures on this record): Median (IQR) | 4.0 (2.0, 7.0) | 3.0 (2.0, 4.0) | <0.001w |
| PAY1 (Primary expected payer): | |||
| Medicare | 469 (37.4%) | 2121 (21%) | <0.001c |
| Medicaid | 394 (31.4%) | 2856 (28.3%) | - |
| Private insurance | 233 (18.6%) | 2548 (25.3%) | - |
| Self-pay | 98 (7.8%) | 1694 (16.8%) | - |
| No charge | 12 (1%) | 197 (2%) | - |
| Other | 48 (3.8%) | 671 (6.7%) | - |
| APRDRG_Severity (Severity of illness subclass): | |||
| Minor loss of function | 187 (14.9%) | 4212 (41.8%) | <0.001c |
| Moderate loss of function | 376 (30%) | 3469 (34.4%) | - |
| Major loss of function | 464 (37%) | 1750 (17.3%) | - |
| Extreme loss of function | 227 (18.1%) | 656 (6.5%) | - |
Notes: cChi-squared test; tt-test; wWilcoxon rank sum test.