Table 2.
Multiple binary logistic regression model to identify significant independent factors associated with delirium
| Factor | AOR* (95% CI for AOR) | P |
|---|---|---|
| Mechanically ventilated | 2.206 (1.090-4.464) | 0.028 |
| Age (years) | 1.021 (1.004-1.038) | 0.014 |
| APACHE IV | 1.013 (1.002-1.023) | 0.022 |
| Gender | 1.098 (0.591-2.040) | 0.767 |
| Blood transfusion | 0.918 (0.486-1.736) | 0.793 |
| Fentanyl | 0.636 (0.274-1.476) | 0.292 |
| Propofol | 1.445 (0.377-5.548) | 0.591 |
| Dexmedetomidine | 2.203 (0.656-7.393) | 0.201 |
| Midazolam | 2.037 (0.528-7.857) | 0.302 |
| RASS at enrollment | 0.944 (0.715-1.248) | 0.687 |
*AOR of delirium presence versus absent. Hosmer and Lemeshow goodness-of-fit test, χ2=7.87, df=8 and P=0.446. Results are expressed as AOR and 95% CI for AOR. APACHE IV: Acute physiology and chronic health evaluation IV, AOR: Adjusted odds ratio, CI: Confidence interval, RASS: Richmond Agitation–Sedation Scale