Table 3. Bundle trusts vs. other London trusts for COPD admissions.
| 7 day readmissions | 28 day readmissions | 90 day readmissions | Number of bed-days | |
|---|---|---|---|---|
| Mean annual number for London COPD admissions, 2002–2012 | 345.3 (49.0) | 1,008.4 (141.8) | 1,841.6 (207.8) | 46,404 (8,130.7) |
| Mean annual number for bundle COPD admissions, 2002–2012 | 209.1 (59.4) | 562.8 (144.9) | 1,014 (243.2) | 27,769.4 (3,419.4) |
| Annual trend in London readmissions pre-implementation 1 | +1.8% (0.042) | +1.3% (0.008) | +0.7% (0.053) | -1.3 (<0.001) |
| Annual trend in bundle readmissions pre-implementation 2 | +3.0% (0.394) | +2.2% (0.279) | +1.4% (0.261) | -2.1 (<0.001) |
| Annual trend in London readmissions post-implementation 2 | -4.0% (0.100) | -3.2% (0.035) | -1.9% (0.135) | -2.8 (0.038) |
| Annual trend in bundle readmissions post-implementation 3 | -7.3% (0.355) | -4.6% (0.440) | -0.8% (0.884) | -3.6 (0.718) |
| Effect size would need for p≤0.05 | -15.5% | -11.7% | -10.5% | -8.6 |
1 P-value refers to difference of this trend from zero
2 P-values refer to difference between these trends and the trend in London comparison trusts
3 P-value refers to difference between this trend and trend in London comparison trusts, adjusted for baseline trends