Bedspaced and assigned general internal medicine (GIM) wards patients pair matched by rotation block, Clinical teaching unit (CTU) team and case mix group (CMG)
| Bedspaced patients (n=456) | Assigned GIM wards patients (n=456) | Standardised difference | |
| Demographics | |||
| Male | 232 (50.9%) | 222 (48.7%) | 0.0439 |
| Age median (IQR) | 73.00 (61.00–82.25) | 73.00 (61.00–83.00) | 0.0393 |
| Length of stay | |||
| Length of stay, days: median (IQR) | 4.97 (2.96–8.84) | 5.54 (3.31–9.98) | 0.0774 |
| Admission day | |||
| Weekend (Saturday or Sunday) | 123 (27.0%) | 112 (24.6%) | 0.0552 |
| Admission month | |||
| January | 35 (7.7%) | 37 (8.1%) | 0.0163 |
| February | 41 (9.0%) | 31 (6.8%) | 0.0814 |
| March | 35 (7.7%) | 46 (10.1%) | 0.0849 |
| April | 33 (7.2%) | 32 (7.0%) | 0.0085 |
| May | 29 (6.4%) | 27 (5.9%) | 0.0183 |
| June | 37 (8.1%) | 37 (8.1%) | 0.0000 |
| July | 45 (9.9%) | 46 (10.1%) | 0.0073 |
| August | 34 (7.5%) | 39 (8.6%) | 0.0404 |
| September | 45 (9.9%) | 37 (8.1%) | 0.0614 |
| October | 39 (8.6%) | 45 (9.9%) | 0.0455 |
| November | 45 (9.9%) | 39 (8.6%) | 0.0455 |
| December | 38 (8.3%) | 40 (8.8%) | 0.0157 |
| Capacity ratio median (IQR) | 1.35 (1.26–1.41) | 1.34 (1.26–1.43) | 0.0346 |
| CTU team | |||
| A | 122 (26.8%) | 122 (26.8%) | 0.0000 |
| B | 107 (23.5%) | 107 (23.5%) | 0.0000 |
| C | 113 (24.8%) | 113 (24.8%) | 0.0000 |
| D | 114 (25.0%) | 114 (25.0%) | 0.0000 |
| Charlson Comorbidity Index (CCI) Score | |||
| 0 | 113 (24.8%) | 118 (25.9%) | 0.0252 |
| 1 | 121 (26.5%) | 101 (22.2%) | 0.1023 |
| >=2 | 222 (48.7%) | 237 (52.0%) | 0.0658 |
| Resource intensity weight (RIW) Median (IQR) | 0.97 (0.69–1.51) | 1.02 (0.69–1.73) | 0.0180 |
| Top seven case mix group (admission diagnosis) | |||
| 139 Chronic obstructive pulmonary disease | 83 (18.2%) | 83 (18.2%) | 0.0000 |
| 138 Viral/unspecified pneumonia | 52 (11.4%) | 52 (11.4%) | 0.0000 |
| 487 Lower urinary tract infection | 32 (7.0%) | 32 (7.0%) | 0.0000 |
| 196 Heart failure without cardiac catheter | 31 (6.8%) | 31 (6.8%) | 0.0000 |
| 477 Renal failure | 23 (5.0%) | 23 (5.0%) | 0.0000 |
| 254 Gastrointestinal haemorrhage | 20 (4.4%) | 20 (4.4%) | 0.0000 |
| 437 Diabetes | 15 (3.3%) | 15 (3.3%) | 0.0000 |
For full list of Charlson Comorbidity Index comorbidities and top 52 case mix groups (CMGs), please see online supplementary appendix table 7.