Table 2.
Univariate and multivariate logistic regression analysis to determine the independent factors associated with delirium.
| Variables | Univariate | Multivariate | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Age | 1.006 (0.990-1.023) | 0.445 | ||
| Gender (male vs. female) | 1.410 (1.246-3682) | 0.001∗ | 0.386 (0.094-1.590) | 0.181 |
| Marital status (unmarried vs. married) | 3.007 (1.901-4.756) | <0.001∗ | 4.659 (2.344-6.466) | <0.001∗ |
| Smoking (yes vs. no) | 1.433 (1.267-3.702) | 0.001∗ | 1.029 (1.007-2.114) | <0.001∗ |
| Usage of mechanical ventilator (yes vs. no) | 1.444 (1.084-2.245) | 0.001∗ | 1.216 (1.105-2.447) | <0.001∗ |
| Head trauma (yes vs. no) | 1.651 (1.054-3.150) | <0.001∗ | 1.403 (1.170-2.954) | 0.039∗ |
| APACHE IV score | 1.269 (1.191-1.352) | <0.001∗ | 1.122 (0.964-1.305) | 0.138 |
| SOFA score | 2.338 (1.963-2.784) | <0.001∗ | 1.435 (1.240-2.788) | 0.006∗ |
| RASS score | 1.020 (0.852-1.356) | 0.993 | ||
| VAP (yes vs. no) | 0.403 (0.208-0.781) | 0.007∗ | 0.427 (0.218-0.835) | 0.053 |
| Hospital LOS | 1.623 (1.484-1.747) | <0.001∗ | 1.121 (0.926-1.357) | 0.240 |
| ICU LOS | 3.486 (2.505-4.852) | <0.001∗ | 3.904 (2.464-6.183) | <0.001∗ |
APACHE IV: Acute Physiology and Chronic Health Evaluation IV; SOFA: Sequential Organ Failure Assessment; RASS: Richmond Agitation-Sedation Scale; MV: mechanical ventilator; VAP: ventilator-associated pneumonia; LOS: length of stay; OR: odds ratio. ∗Statistically significant <0.05.