Table 6. Univariate analysis for dependent complication variable: DVT/PE.
Degrees of freedom=1; sample size=92
P-value <0.2 was the threshold for inclusion in multivariable logistic regression analysis
DVT/PE: deep vein thrombosis and/or pulmonary embolism; ISS: Injury Severity Score
| Χ2 statistic | P-value | |
| Patient factors | ||
| Male gender | 0 | 1 |
| Age >65 years | 0.2 | 0.697 |
| Age >80 years | 0 | 1 |
| Smoking | 1.6 | 0.199 |
| Hypertension | 0 | 0.933 |
| Diabetes | 0.3 | 0.603 |
| Anticoagulation | 0.9 | 0.319 |
| Alcoholism | 0.1 | 0.759 |
| Coronary disease | 0.4 | 0.523 |
| Injury factors | ||
| Complete injury | 0.8 | 0.386 |
| High level (C1-C4) | 0.6 | 0.445 |
| Polytrauma (ISS >15) | 9 | 0.002 |
| Surgery factors | ||
| Surgical time >120 minutes | 0.5 | 0.473 |
| Greater than 5 levels instrumented | 0.4 | 0.51 |
| Anterior instrumentation | 1.4 | 0.228 |
| Posterior Instrumentation | 5.8 | 0.015 |
| Anterior and posterior Instrumentation | 1.1 | 0.283 |