Table 2 Baseline characteristics of hospitals included in pooled cohort
| Â | Cohort Proportion | Readmission Rate | P |
|---|---|---|---|
Hospital ownership/control, (N) % | |||
 Government, non-federal | 16.1% | 16.8% | <.001 |
 Private, non-profit | 62.9% | 17.2% | |
 Private, for-profit | 21.0% | 17.4% | |
Hospital teaching status, (N) % | |||
 Metro, non-teaching | 44.2% | 17.3% | <.001 |
 Metro, teaching | 30.0% | 17.6% | |
 Non-metro, non-teaching | 25.8% | 15.9% | |
Hospital geographic location, (N) % | |||
 Large metro area ≥ 1 M | 43.7% | 17.9% | <.001 |
 Small metro area < 1 M | 30.5% | 16.8% | |
 Micropolitan area | 15.3% | 16.0% | |
 Non-metro/non-micropolitan (rural) | 10.5% | 15.5% | |
Hospital bed size, (N) % | |||
 Small | 26.6% | 16.5% | <.001 |
 Medium | 32.3% | 17.1% | |
 Large | 41.1% | 17.4% | |
Hospital total all-cause annual discharges, (N) Mean ± SD | 6296 ± 6425 |  |  |
Quartiles of Hospital total all-cause annual discharges, (N) % | |||
 1st Quartile (≤ 8971) | 59.1% | 16.4% | <.001 |
 2nd Quartile (8972 – 15,406) | 20.9% | 17.5% | |
 3rd Quartile (15,407 – 24,534) | 12.9% | 17.7% | |
 4th Quartile (≥24,535) | 7.1% | 18.0% | |
COPD Discharges, (N) Mean ± SD | 161 ± 133 |  |  |
COPD Discharge Quartiles | |||
 1st Quartile (≤ 122) | 48.5% | 15.8% | <.001 |
 2nd Quartile (123–205) | 24.1% | 17.0% | |
 3rd Quartile (206–322) | 17.0% | 17.6% | |
 4th Quartile (≥ 323) | 10.4% | 18.0% | |
Proportion of Medicaid patient days, (N) Mean ± SD | 0.171 ± 0.112 |  |  |
Medicaid Proportion Quartiles, (N) % | |||
 1st Quartile (≤ 10.6%) | 31.5% | 16.9% | <.001 |
 2nd Quartile (10.6–16.1%) | 25.1% | 17.2% | |
 3rd Quartile (16.1–23.9%) | 22.9% | 17.3% | |
 4th Quartile (≥ 23.9%) | 20.5% | 17.6% | |