Table 3.
Univariable analysis of DVT.
| Variables | Before matching |
After matching |
||||
|---|---|---|---|---|---|---|
| OR | 95% CI | P | OR | 95% CI | P | |
| Chronic lung disease | 1.176 | 1.042–1.173 | .016 | 1.310 | 0.060–1.602 | .162 |
| Cerebrovascular disease | 1.364 | 1.130–1.422 | .055 | 1.284 | 1.086–1.941 | .039 |
| History of surgery | 0.758 | 0.365–1.573 | .457 | 1.324 | 1.133–1.788 | .013 |
| Admission to general ward before ICU | 1.290 | 1.123–2.684 | .005 | 0.841 | 0.264–2.673 | .769 |
| Admission to operating room before ICU | 1.787 | 0.979–3.260 | .059 | 3.302 | 1.187–9.180 | .022 |
| Admission to ICU due to internal medicine disease | 1.374 | 1.216–1.647 | <.001 | 1.752 | 0.358–1.578 | .752 |
| Admission to ICU due to surgical medicine disease | 3.026 | 1.768–5.180 | <.001 | >0.999 | 0.481–2.079 | >.999 |
| Admission to ICU due to other reasons | 1.360 | 1.360–1.366 | .560 | 1.752 | 0.358–1.578 | .752 |
| Mechanical Ventilation | 1.636 | 0.883–3.034 | .118 | 2.065 | 0.929–4.596 | .075 |
| Sedative and analgesic drugs | 2.444 | 1.300–4.598 | .006 | 3.015 | 1.349–6.739 | .007 |
| Muscle relaxants | 3.037 | 1.007–9.161 | .049 | 1.735 | 0.041–5.641 | >.999 |
| APTT | 1.002 | 0.991–1.014 | .706 | 0.988 | 0.960–1.017 | .422 |
| INR | 0.962 | 0.678–1.365 | .827 | 0.901 | 0.503–1.612 | .725 |
| D–dimer | 1.007 | 0.999–1.014 | .081 | 1.998 | 1.132–1.990 | .088 |
| Caprini–high risk | 1.966 | 1.110–3.482 | .021 | 1.569 | 0.731–3.365 | .248 |
| DVT assessment within 24 h after admission | 0.595 | 0.349–1.013 | .056 | 0.611 | 0.292–1.280 | .192 |
| DVT assessment within 48 h after admission | 0.871 | 0.337–2.254 | .776 | 0.810 | 0.144–1.672 | >.999 |
| DVT assessment when condition changes | 0.323 | 0.235–0.353 | <.001 | 0.457 | 0.216–0.667 | .001 |
| Physiotherapy prophylaxis | 0.822 | 0.370–0.819 | .720 | 0.992 | 0.255–2.167 | .558 |
| Compression therapy | 0.202 | 0.116–0.352 | <.001 | 0.072 | 0.020–0.257 | <.001 |
OR: odds ratio; CI: confidence interval; DVT: deep vein thrombosis; ICU: intensive care unit; APTT: activated partial thromboplastin time; INR: international normalised ratio.