Table 2

Baseline characteristics stratified by readmitted or not readmitted within 90 days

All-cause readmission at 90 days
Data at hospital dischargeNot 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 index21 (10)21 (10)0.532
Smoking pack year history44 (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 year2 (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
DECAF1 (1, 2)2 (1, 3)<0.001
Completed post-hospitalisation early pulmonary rehabilitation8 (5.2)7 (11.9)0.130
MRC 1–352 (31.8)13 (22.0)0.142
MRC 433 (21.4)9 (15.3)
MRC 569 (44.8)37 (62.7)
eMRC 5a56 (36.4)27 (45.8)
eMRC 5b13 (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 total56.0 (17.0)58.5 (15.1)0.310
Total number of comorbidities3 (2, 4)4 (2, 5)0.004
Charlson Index1 (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
 1–49 (5.9)9 (15.3)0.587
 5–6144 (94.1)50 (84.7)
Daily energy expenditure (kcal/day)73 (22, 185)51 (0, 90)0.013
4MGS, m/s0.65 (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.