Table 3.
Univariate analyses of factors associated with preoperative DVT following tibial plateau fracture
| Variables | DVTs/total (incidence) | P |
|---|---|---|
| Gender | 0.003 | |
| Male | 139/742 (18.7%) | |
| Female | 53/437 (12.1%) | |
| Age | 0.108 | |
| 18–44 | 81/558 (14.5%) | |
| 45–64 | 96/509 (18.9%) | |
| 65 or older | 15/112 (13.4%) | |
| BMI (kg/m2) | ||
| 18.5–23.9 | 44/362 (12.2%) | |
| < 18.5 | 2/21 (9.5%) | |
| 24.0–27.9 | 102/511 (20.0%) | |
| ≥ 28.0 | 44/286 (15.4%) | |
| Diabetes mellitus | 23/154 (14.9%) | 0.627 |
| Hypertension | 47/214 (22.0%) | 0.013 |
| Chronic heart disease | 14/56 (25.0%) | 0.070 |
| Fracture type (Schatzker) | 0.022 | |
| I-IV | 133/793 (16.8%) | |
| V-VI | 59/385 (15.3%) | |
| Mechanism (high-energy) | 120/758(15.8%) | 0.571 |
| Open fracture | 22/71(31.0%) | 0.001 |
| Current smoking | 37/166 (22.3) | 0.024 |
| Alcohol consumption | 20/107 (18.7%) | 0.480 |
| D-Dimer (> 0.55 mg/L) | 148/690 (21.4%) | < 0.001 |
| Neutrophil count (> 5.02 × 109/L) | 155/795 (19.5%) | < 0.001 |
| Lymphocyte (< 1.24 × 109/L) | 81/458 (17.7%) | 0.299 |
| Monocyte (> 0.78 × 109/L) | 90/431 (20.9%) | 0.001 |
| Platelet (> 278 × 109/L) | 97/368 (26.4%) | < 0.001 |
| NLR (> 2.90) | 94/432 (21.8%) | < 0.001 |
| PLR (> 206) | 90/407 (22.1%) | < 0.001 |
| MLR (> 0.50) | 94/436 (21.6%) | < 0.001 |
| SII (> 1066) | 85/362 (23.5%) | < 0.001 |
DVT deep vein thrombosis, BMI body mass index, NLR neutrophil to lymphocyte rate, PLR platelet to lymphocyte rate, MLR monocyte to lymphocyte rate, SII systemic immune-inflammation index