Table 2 Univariate analysis of the risk factors for DVT in TJA
Variable | Non-DVT (n = 658) | DVT (n = 57) | P value |
|---|---|---|---|
Female gender (%) | 460 (69.9) | 47 (82.5) | 0.045* |
Age, years (mean ± SD) | 64.7 ± 12.8 | 70.6 ± 8.8 | < 0.001* |
BMI, kg/m2 (mean ± SD) | 24.6 ± 4.2 | 25.9 ± 4.4 | 0.026* |
Diabetes (%) | 110 (16.7) | 6 (10.5) | 0.224 |
Hypertension (%) | 291 (44.2) | 31 (54.4) | 0.139 |
Malignance (%) | 29 (4.4) | 1 (1.8) | 0.338 |
Cardiovascular disease (%) | 77 (11.7) | 7 (12.3) | 0.896 |
Stroke (%) | 84 (12.8) | 11 (19.3) | 0.163 |
COPD (%) | 10 (1.5) | 1 (1.8) | 0.890 |
Venous disease (%) | 23 (3.5) | 1 (1.8) | 0.484 |
Previous surgery (%) | 18 (2.7) | 0 (0) | 0.206 |
Preoperative aspirin (%) | 92 (14.0) | 7 (12.3) | 0.721 |
Preoperative steroid (%) | 27 (4.1) | 0 (0) | 0.119 |
Smoking (%) | 86 (13.1) | 5 (8.8) | 0.350 |
Diagnosis | – | – | 0.001* |
TKA (%) | 277 (42.1) | 42 (73.7) | < 0.001* |
Operation time, min (mean ± SD) | 109.9 ± 29.3 | 107.7 ± 24.2 | 0.585 |
Intraoperative blood loss, ml (mean ± SD) | 262.9 ± 213.5 | 211.8 ± 136.2 | 0.076 |
Chemical thromboprophylaxis | – | – | 0.185 |
Transfusion (%) | 77 (11.7) | 12 (21.1) | 0.040* |