| Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
 | OR (95% CI) | Pvalue | OR (95% CI) | Pvalue |
Age (per year) | 1.09 (1.03 to 1.18) | 0.042 | Â | Â |
APACHE II score (per point) | 1.17 (1.09 to 1.35) | 0.033 | Â | Â |
LIS (per point) | 1.72 (1.18 to 3.12) | 0.029 | 1.61 (1.18 to 2.77) | 0.037 |
PO2/FiO2a (per one-log) | 0.61 (0.48 to 0.82) | 0.031 | 0.68 (0.53 to 0.87) | 0.041 |
HBPa (per one-log) | 1.65 (1.18 to 3.23) | 0.027 | 1.52 (1.12 to 2.85) | 0.034 |