Relation of dyspnoea grade and presence or absence of consolidation to readmission
| Dyspnoea grade | n | 28-day readmission, %* | 90-day readmission, %* | ||
| Total | npAECOPD | pAECOPD | Total | ||
| 1 | 6 | 0 | 0 | 0 | 16.7 |
| 2 | 46 | 6.5 | 10.7 | 0 | 10.9 |
| 3 | 167 | 12.0 | 11.3 | 14.0 | 19.2 |
| 4 | 367 | 19.9 | 20.6 | 18.1 | 34.1 |
| 5 | 238 | 25.6 | 25.9 | 25.0 | 47.1 |
| 5a | 143 | 21.0† | 17.0‡ | 32.4 | 39.9‡ |
| 5b | 95 | 32.6† | 41.7‡ | 17.1 | 57.9‡ |
↵* Of patients surviving to discharge, n=824.
↵† Significant difference between 5a and 5b, p<0.05.
↵‡ Significant difference between 5a and 5b, p<0.01
npAECOPD, non-pneumonic acute exacerbations of chronic obstructive pulmonary disease; pAECOPD, pneumonic acute exacerbations of chronic obstructive pulmonary disease.