Table 5.
Univariate analysis of the risk of postoperative lower extremity deep vein thrombosis (%)
| Research group (n=50) | With deep vein thrombosis (n=9) | Without deep vein thrombosis (n=41) | x2 | P | |
|---|---|---|---|---|---|
| Age (years) | <70 | 2 | 28 | 6.527 | 0.011 |
| ≥70 | 7 | 13 | - | - | |
| Sex | Male | 4 | 15 | 0.193 | 0.660 |
| Female | 5 | 26 | - | - | |
| BMI (Body Mass Index) | >24 | 6 | 9 | 7.027 | 0.008 |
| ≤24 | 3 | 32 | - | - | |
| Operative time | >2 h | 4 | 21 | 0.136 | 0.713 |
| ≤2 h | 5 | 20 | - | - | |
| Intraoperative bleeding | >500 ml | 6 | 25 | 0.101 | 0.750 |
| ≤500 ml | 3 | 16 | - | - | |
| Smoking | Yes | 5 | 8 | 4.983 | 0.026 |
| No | 4 | 33 | - | - | |
| Hormones | Yes | 3 | 18 | 0.338 | 0.561 |
| No | 6 | 23 | - | - | |
| Hypertension | Yes | 5 | 24 | 0.027 | 0.870 |
| No | 4 | 17 | - | - | |
| Diabetes | Yes | 8 | 12 | 10.930 | 0.001 |
| No | 1 | 29 | - | - | |
| Hyperlipidemia | Yes | 4 | 15 | 0.193 | 0.660 |
| No | 5 | 26 | - | - |
BMI, body mass index.