Table 4.

Uni- and multivariate logistic regression

Variable	Univariate		Multivariate
	OR (95% CI)	p value	OR (95% CI)	p value
Age	0.467 (0.318 – 0.685)	0.000	0.569 (0.360 – 0.901)	0.016
BMI	0.633 (0.422 – 0.950)	0.027	0.774 (0.499 – 1.200)	0.252
ASA status	0.555 (0.357 – 0.864)	0.009	0.926 (0.555 – 1.544)	0.768
Duration of anesthesia	0.986 (0.972 – 1.000)	0.049	0.985 (0.970 – 1.000)	0.055
Preoperative hypertension	3.428 (2.003 – 5.865)	0.000	2.080 (1.102 – 3.925)	0.024

BMI, body mass index; ASA status, physical status based on American Society of Anesthesiologists classification.