Table 2.
Preoperative characteristics
| THA | 4565 (52.2) |
| TKA | 4172 (47.8) |
| Age/years median (IQR) | 68 (67–75) |
| <50 | 524 (6.0) |
| 51–60 | 1465 (16.8) |
| 61–65 | 1384 (15.8) |
| 66–70 | 1717 (19.7) |
| 71–75 | 1546 (17,7) |
| 76–80 | 1191 (13.6) |
| 81–85 | 650 (7.4) |
| >85 | 260 (3.0) |
| Females | 5031 (57.8) |
| BMI median (IQR) | 27.7 (24.8–31.2) |
| <18.5 | 69 (0.8) |
| 18.5–24.9 | 2284 (26.2) |
| 25.0–29.9 | 3475 (39.9) |
| 30–34.9 | 1960 (22.5) |
| 35–39.9 | 685 (7.9) |
| >40 | 237 (2.7) |
| Missing | 27 (0.3) |
| BMI ≥30 | 2882 (33.0) |
| Missing | 27 (0.3) |
| Anaemia | 1107 (12.8) |
| Missing | 77 (0.9) |
| Walking aids | 2126 (24.8) |
| Missing | 177 (2.0) |
| Living alone | 2954 (33.8) |
| With others | 5783 (66.2) |
| Missing | 0 (0.0) |
| Smoking | 1325 (15.3) |
| Missing | 90 (1.0) |
| Alcohol >24 g/day | 599 (6.9) |
| Missing | 73 (0.8) |
| Hypertension | 4585 (52.8) |
| Missing | 55 (0.6) |
| Hypercholesterolaemia | 2572 (29.4) |
| Missing | 80 (0.9) |
| Diabetes with antihyperglycaemic treatment | 861 (9.9) |
| Missing | 35 (0.4) |
| Anticoagulant treatment* | 445 (5.1) |
| Missing | 0 (0.0) |
| Cardiac disease | 1083 (12.4) |
| Missing | 128 (1.5) |
| Pulmonary disease | 658 (7.6) |
| Missing | 73 (0.8) |
| PsD with pharmacological treatment | 975 (11.2) |
| Missing | 393 (4.5) |
| Previous stroke | 528 (6.1) |
| Missing | 129 (1.5) |
| Previous venous thromboembolic event | 469 (5.5) |
| Missing | 152 (1.7) |
Parentheses are per cent unless otherwise specified.
*Vitamin K antagonists or new oral anticoagulants.
BMI, body mass index; PsD, psychiatric disorder; THA, total hip arthroplasty; TKA, total knee arthroplasty.