Comparison of COPD Index and readmission rates and patterns of readmission before and after COPD care bundle implementation
| Before COPD bundle | After COPD bundle | |
| Number of months | 26 | 10 |
| COPD Index admissions | 982 | 305 |
| 30-day all-cause readmissions | 223 | 45 |
| Readmission rate (per month)* | 22.7 | 14.7 |
| Length of stay (mean days)† | 4.83 | 4.61 |