Table 3.
Linear spline associations between UO/FI and mortality
| Variables | Crude odds ratio (95% CI) | P | Adjusted odds ratio (95% CI) | P |
|---|---|---|---|---|
| UO/FI ≤ 0.5 | 0.08 (0.03–0.22) | < 0.001 | 0.09 (0.03–0.25) | < 0.001 |
| UO/FI > 0.5 | 1.04 (0.95–1.13) | 0.353 | 1.04 (0.96–1.14) | 0.281 |
| Low tidal volume intervention | 0.68 (0.51–0.92) | 0.013 | ||
| Leukemia | 3.56 (1.19–10.6) | 0.022 | ||
| Solid tumour | 3.38 (1.18–9.67) | 0.023 | ||
| Respiratory rate | 1.01 (1.00–1.03) | 0.013 | ||
| Platelet count (10^9/L) | 0.99 (0.99–0.99) | 0.027 | ||
| PaO2/FiO2 | 0.99 (0.99–0.99) | 0.005 |
Linear spline function was applied in the logistic models using cut-off value of 0.5 of UO/FI. The VIF value was 3.03 in the multivariable logistic model
Abbreviation: UO/FI Urine output/fluid intake