Baseline characteristics stratified by readmitted or not readmitted within 90 days
| All-cause readmission at 90 days | |||
|---|---|---|---|
| Data at hospital discharge | Not readmitted (n=154) | Readmitted (n=59) | p Value |
| Age (years) | 70.5 (11.1) | 75.9 (9.2) | 0.001 |
| Male, n (%) | 78 (50.6) | 33 (55.9) | 0.490 |
| Social deprivation index | 21 (10) | 21 (10) | 0.532 |
| Smoking pack year history | 44 (31) | 44 (29) | 0.877 |
| Lives alone, n (%) | 62 (40.3) | 29 (49.2) | 0.240 |
| Hospital admission in previous year, n (%) | 47 (30.5) | 32 (54.2) | 0.001 |
| Number of exacerbations in previous year | 2 (1, 4) | 3 (1, 6) | 0.006 |
| Length of stay (days) | 2 (1, 4) | 4 (2, 7) | 0.001 |
| Requiring non-invasive ventilation, n (%) | 12 (7.8) | 10 (16.9) | 0.049 |
| Requiring intubation and ventilation, n (%) | 1 (0.6) | 1 (1.7) | 0.478 |
| DECAF | 1 (1, 2) | 2 (1, 3) | <0.001 |
| Completed post-hospitalisation early pulmonary rehabilitation | 8 (5.2) | 7 (11.9) | 0.130 |
| MRC 1–3 | 52 (31.8) | 13 (22.0) | 0.142 |
| MRC 4 | 33 (21.4) | 9 (15.3) | |
| MRC 5 | 69 (44.8) | 37 (62.7) | |
| eMRC 5a | 56 (36.4) | 27 (45.8) | |
| eMRC 5b | 13 (8.4) | 10 (16.9) | |
| BMI (kg/m2) | 25.6 (22.6, 29.9) | 25.1 (20.9, 29.4) | 0.277 |
| FEV1% pred. | 38 (27, 51) | 30 (23, 42) | 0.290 |
| SGRQ total | 56.0 (17.0) | 58.5 (15.1) | 0.310 |
| Total number of comorbidities | 3 (2, 4) | 4 (2, 5) | 0.004 |
| Charlson Index | 1 (1, 2) | 2 (1, 4) | <0.001 |
| Cardiovascular comorbidity (ischaemic heart disease or congestive cardiac failure) | 26 (16.9) | 20 (33.9) | 0.007 |
| Katz Index | |||
| 1–4 | 9 (5.9) | 9 (15.3) | 0.587 |
| 5–6 | 144 (94.1) | 50 (84.7) | |
| Daily energy expenditure (kcal/day) | 73 (22, 185) | 51 (0, 90) | 0.013 |
| 4MGS, m/s | 0.65 (0.25) | 0.49 (0.25) | <0.001 |
Data expressed as mean (SD) or median (25th, 75th centiles). 4MGS, 4 m gait speed; BMI, body mass index; DECAF score, extended MRC Dyspnoea Score, Eosinopenia, Consolidation, Acidaemia, atrial Fibrillation; eMRC, extended Medical Research Council; MRC, Medical Research Council; SGRQ, St George's Respiratory Questionnaire.