Table 2. Multivariable Logistic Regression Model for Postoperative Delirium.

Variable	Odds Ratio (95% CI)	P Value
Educational level above high school	0.31 (0.15-0.62)	.001
Baseline mild cognitive impairment	2.42 (1.15-5.10)	.02
Surgical procedure
General	1 [Reference]	NA
Orthopedic	6.23 (2.02-19.19)	.001
Spine	3.70 (1.25-10.95)	.02
Thoracic	5.31 (0.84-33.34)	.08
Urologic	4.03 (1.16-14.07)	.03
Surgical time >4 h	2.10 (1.01-4.40)	.048
Presence of PACU delirium	3.56 (1.35-9.31)	.01

Abbreviations: NA, not applicable; PACU, postanesthesia care unit.