Risk of death over a 2-year period comparing patients who were not readmitted, readmitted once or two times due to a different or the same condition
| Risk of mortality over a 2-year period | ||||||
|---|---|---|---|---|---|---|
| HR | 95% CI | p | HR | 95% CI | p | |
| No readmission (reference group) | 1 | – | – | 1 | – | – |
| 1 non-identical AR episode | 3.62 | 3.31–3.95 | <0.001 | 2.43 | 2.22–2.66 | <0.001 |
| ≥2 non-identical AR episodes | 5.32 | 4.74–5.97 | <0.001 | 3.03 | 2.70–3.40 | <0.001 |
| 1 identical AR episode | 4.54 | 3.48–5.91 | <0.001 | 4.69 | 3.60–6.12 | <0.001 |
| ≥2 identical AR episodes | 7.75 | 5.84–10.29 | <0.001 | 5.01 | 3.78–6.66 | <0.001 |
AR = admission–readmission; CI, confidence interval; HR, hazard ratio.