Table 4.

Independent risk factors for postoperative delirium: logistic regression analysis.

Risk factors	OR (95% CI)	P
Non-benzodiazepines	5.68 (2.16–14.97)	<0.001
Stroke	6.31 (1.71–23.21)	0.008
Na, g/dL	0.83 (0.73–0.94)	0.003
PNI	0.91 (0.84–0.98)	0.014
SF-36 PCS score	0.95 (0.91–0.99)	0.011

P < 0.05 is considered statistically significant.

OR, odds ratio; CI, confidence interval; Na, sodium; PNI, prognostic nutritional index; SF-36, Medical Outcomes Study Short-Form 36-Item Health Survey; PCS, physical component summary.