TABLE 2.
Adjusted Hazard Ratio of Readmission within 1 Year after Hospital Discharge for Patients with a Clinical Culture Positive for MRSA, VRE, or Clostridium difficile Occurring More than 48 Hours after Hospitalization
| Characteristic | Hazard ratio (95% confidence interval) (n = 136,513) |
|---|---|
| Unadjusted, positive clinical culture | 1.45 (1.38–1.51) |
| Adjusted | |
| Clinical culture positive for MRSA, VRE, or C. difficile | 1.40 (1.33–1.51) |
| Female sex | 0.98 (0.95–1.00) |
| Age <65 years | 1.45 (1.41–1.49) |
| Length of initial hospital stay >3 days | 1.14 (1.12–1.17) |
| ICU stay | 0.87 (0.85–0.89) |
| Charlson comorbidity index | 1.11 (1.10–1.11) |
| Year of hospital admissiona | 0.93 (0.93–0.94) |
NOTE. ICU, intensive care unit; MRSA, methicillin-resistant Staphylococcus aureus; VRE: vancomycin-resistant enterococci.
a
Decrease in hazard of readmission per increase in year of hospital admission.