Cardiovascular |
Hypertension | 553 (57.2) | 222 (59.5) | 0.46 | 0.9 (0.7–1.2) |
Arrhythmia | 107 (11.1) | 29 (7.8) | 0.09 | 1.5 (1.0–2.3) |
Coronary artery disease | 108 (11.2) | 38 (10.2) | 0.63 | 1.1 (0.8–1.6) |
Myocardial infarction | 60 (6.2) | 25 (6.7) | 0.71 | 0.9 (0.6–1.5) |
Chronic heart failure | 14 (1.4) | 4 (1.1) | 0.79 | 1.4 (0.4–4.2) |
Thromboembolic |
Deep vein thrombosis | 23 (2.4) | 11 (2.9) | 0.56 | 0.8 (0.4–1.7) |
Pulmonary embolism | 8 (0.8) | 3 (0.8) | > 0.99 | 1.0 (0.3–3.9) |
Neurologic |
Transient ischemic attack | 33 (3.4) | 4 (1.1) | 0.015 | 3.3 (1.1–9.3) |
Stroke | 25 (2.6) | 7 (1.9) | 0.55 | 1.4 (0.6–3.2) |
Dementia | 8 (0.8) | 1 (0.3) | 0.46 | 3.1 (0.4–24.9) |
Respiratory |
Asthma | 97 (10.0) | 34 (9.1) | 0.68 | 1.1 (0.7–1.7) |
COPD | 40 (4.1) | 10 (2.7) | 0.26 | 1.6 (0.8–3.2) |
Renal failure | 32 (3.3) | 6 (1.6) | 0.10 | 2.1 (0.9–5.1) |
Diabetes | 172 (17.8) | 72 (19.3) | 0.53 | 0.9 (0.7–1.2) |
Previous knee surgery | 196 (20.3) | 21 (5.6) | < 0.001 | 4.3 (2.7–6.8) |
Preop Hb status |
Preop Hb, mean ± SD, g/L | 134.7 ± 13.5 | 133.1 ± 13.7 | 0.21 | 1.01 (1.0–1.02) |
Preop anemia,† mean ± SD, g/L | 320.0 ± 33.1 | 118.0 ± 31.6 | 0.65 | 1.1 (0.8–1.4) |