Predictor | Total cost, β (95% CI)* | Inpatient length of stay, β (95% CI)† | ICU admission, OR (95% CI)‡ | ICU length of stay, β (95% CI)† | Mechanical ventilation, OR (95% CI)‡ | Utilisation of bronchoscopy, OR (95% CI)‡ |
Baseline RSI | 0.005 (−0.002 to 0.011) | −0.003 (−0.008 to 0.003) | 1.03 (1.00 to 1.05)§ | 0.006 (−0.026 to 0.038) | 1.01 (0.99 to 1.04) | 1.00 (0.98 to 1.02) |
Peak RSI | 0.015 (0.012 to 0.019)¶ | 0.003 (−0.001 to 0.007) | 1.08 (1.05 to 1.10)¶ | 0.068 (0.050 to 0.086)¶ | 1.08 (1.06 to 1.11)¶ | 1.03 (1.01 to 1.04)** |
Delta RSI | 0.017 (0.013 to 0.022)¶ | 0.006 (0.002 to 0.010)** | 1.08 (1.05 to 1.10)¶ | 0.064 (0.043 to 0.084)¶ | 1.08 (1.06 to 1.11)¶ | 1.03 (1.02 to 1.05)** |
*Generalised linear model.
†Negative binomial regression.
‡p<0.05.
§p<0.0001.
¶p<0.001.
**logistic regression.
ICU, intensive care unit; RSI, Radiologic Severity Index.