Table 1.
Characteristics, median with (5-95% range), or number with proportion
| Characteristics | Restrictive group (n = 33) | Liberal group (n = 33) |
|---|---|---|
| Age, years | 68 (43–86) | 72 (53–89) |
| Men/women, no. (% men) | 16/17 (48) | 20/13 (61) |
| Body mass index, kg/m 2 | 27 (20–39) | 26 (20–34) |
| American Society of Anesthesiologists physical status score, no. (%) | ||
| 1 | 5 (15) | 6 (18) |
| 2 | 26 (79) | 22 (67) |
| 3 | 2 (6) | 5 (15) |
| Comorbidities, no. (%) | ||
| Current smoker | 4 (12) | 5 (15) |
| Diabetes | 6 (18) | 4 (12) |
| Hypertension | 18 (55) | 19 (57) |
| Other cardiovascular disease | 5 (15) | 7 (21) |
| Lung disease | 2 (6) | 3 (9) |
| Neurologic disease | 1 (3) | 2 (6) |
| Kidney disease | 1 (3) | 0 |
| Other disease | 8 (24) | 8 (24) |
| Preoperative haemoglobin concentration, g/dL | 13.4 (10.2-15.0) | 13.8 (10.5-16.3) |
Patient characteristics of patients undergoing hip revision surgery and randomized to a transfusion threshold of red blood cells of a haemoglobin concentration of 7.3 or 8.9 g/dL, restrictive group and liberal group, respectively.