Patients | | | |
No of patients | 208 | 217 | |
Age (years) | 69.6 | 71.0 | 1.4 (–0.5 to 3.3) |
Women (%) | 50.5 | 56.7 | 6.2 (–3.3 to 15.7) |
Presence of risk factors (%) | 43.8 | 44.2 | 0.4 (–9.0 to 9.9) |
Operations | | | |
No of operations | 226 | 222 | |
Preoperative haemoglobin (g/l) | 131.7 | 137.2 | 5.5 (2.7 to 8.2) |
Preoperative packed cell volume | 38.9 | 41.0 | 2.1 (1.2 to 2.9) |
General anaesthesia (%) | 31.6 | 30.2 | –1.4 (–9.9 to 7.2) |
Total hip replacements (%) | 77.0 | 71.6 | –5.4 (–13.4 to 2.7) |
Bilateral surgery (%) | 0.9 | 1.8 | 0.9 (–1.2 to 3.1) |
Duration of surgery (minutes) | 115 | 108 | –7 (–13 to 0) |
Estimated intraoperative blood loss (ml) | 690 | 688 | –2 (–103 to 98) |
Postoperative haemoglobin (g/l) | 96.2 | 96.1 | –0.1 (–2.9 to 2.7) |
Postoperative packed cell volume | 28.0 | 28.5 | 0.5 (–0.4 to 1.3) |