Table 2.
Baseline characteristics of hospitals included in pooled cohort
| 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% | |
Note: Unweighted frequencies displayed for cohort proportions. Weighted frequencies for Sub-Strata readmission rates presented. P values are for between hospital characteristic differences in readmission rates