Table 5.
Multivariate cox analysis with survival data
| Co-variables | Hazard ratio (95%CI) | P value |
|---|---|---|
| Administration of etomidate |
1.1 (0.79-1.51) |
0.602 |
| Body mass index of more than 40 kg/m2 |
1.25 (0.76-2.01) |
0.361 |
| Age of more than 75 years |
1.15 (0.83-1.59) |
0.396 |
| ASA score of 4 or 5 |
2.20 (1.55-3.15) |
<0.001 |
| APACHE II score of more than 25 |
1.11 (1.08-1.14) |
<0.001 |
| ICU stay of more than 3 days |
0.54 (0.38-0.79) |
0.001 |
| Re-admission to the ICU |
1.79 (1.21-2.64) |
0.004 |
| Renal failure, hemofiltration within ICU stay | 11.99 (8.02-17.92) | <0.001 |
APACHE II, Acute Physiology and Chronic Health Evaluation II; ASA, American Society of Anesthesiologists; CI, confidence interval; ICU, intensive care unit.