Main prognostic factors for readmission within 3 months of admission to study in 1221 patients after excluding 139 inapplicable (including dead) and 13 not known
No of patients | No readmitted | % readmitted | Relative risk | 95% CI | |
---|---|---|---|---|---|
FEV1=forced expiratory volume in 1 second; NK=not known. *Lower, middle and upper thirds of FEV1 values in litres derived separately for men (lower ≤0.75, middle 0.76–1.16, upper >1.6) and women (lower ≤0.60, middle 0.61–0.89, upper >0.89). | |||||
Background and history: | |||||
First time COPD or readmission | |||||
First time | 356 | 61 | 17.1 | 1.0 | |
Readmission | 802 | 341 | 42.5 | 2.5 | 2.0 to 3.2 |
NK | 63 | 15 | 23.8 | ||
FEV1 tertiles* | |||||
Lower third | 223 | 104 | 46.6 | 1.8 | 1.4 to 2.3 |
Middle third | 202 | 84 | 41.6 | 1.6 | 1.2 to 2.1 |
Upper third | 225 | 60 | 26.7 | 1.0 | |
NK | 571 | 169 | 29.6 | ||
FEV1 % predicted (tertiles) | |||||
Lower third <28.8% | 143 | 63 | 44.1 | 1.6 | 1.2 to 2.2 |
Middle third 28.9–44.8% | 162 | 68 | 42.0 | 1.5 | 1.1 to 2.1 |
Upper third >44.8% | 154 | 43 | 27.9 | 1.0 | |
NK | 762 | 243 | 31.9 | ||
Performance status | |||||
Normal activity | 101 | 21 | 20.8 | 1.0 | |
Strenuous activity limited | 138 | 33 | 23.9 | 1.2 | 0.7 to 1.9 |
Limited but self-care | 388 | 145 | 37.4 | 1.8 | 1.2 to 2.7 |
Limited self-care | 314 | 131 | 41.7 | 2.0 | 1.3 to 3.0 |
Bed care, no self-care | 27 | 9 | 33.3 | 1.6 | 0.8 to 3.1 |
NK | 253 | 78 | 30.8 | ||
Known medications on admission | |||||
0–1 | 210 | 39 | 18.6 | 1.0 | |
2–4 | 822 | 283 | 34.4 | 1.9 | 1.4 to 2.5 |
5+ | 189 | 95 | 50.3 | 2.7 | 2.0 to 3.7 |
On discharge: | |||||
Discharge medication: home nebuliser | |||||
Yes | 505 | 225 | 44.6 | 1.7 | 1.4 to 1.9 |
No | 716 | 192 | 26.8 | 1.0 |