Table 3.

Adjusted odds ratios of hypotension indices in the groups with 30-day and 90-day postoperative mortality

	Postoperative 30-day mortalitya n/N = 52/14,210		Postoperative 90-day mortalityb n/N = 138/13,334
	aOR (95% CI)	P value	aOR (95% CI)	P value
Postinduction
Total duration (min)	1.00 (0.98 to 1.03)	0.69	1.00 (0.98 to 1.01)	0.60
Proportion (%)	1.19 (0.38 to 3.70)	0.77	0.86 (0.41 to 1.79)	0.69
AUC (mm Hg·min−1/100)	1.04 (0.87 to 1.25)	0.65	1.01 (0.89 to 1.14)	0.89
Proportion of AUC (mm Hg)	1.03 (0.93 to 1.13)	0.60	1.01 (0.94 to 1.07)	0.82
Intraoperative
Total duration (min)	1.00 (1.00 to 1.01)	< 0.001	1.00 (1.00 to 1.00)	0.12
Proportion (%)	5.2 (2.12 to 12.6)	< 0.001	2.42 (1.33 to 4.39)	0.004
AUC (mm Hg·min−1/100)	1.06 (1.03 to 1.08)	< 0.001	1.03 (1.00 to 1.05)	0.02
Proportion of AUC (mm Hg)	1.19 (1.12 to 1.27)	< 0.001	1.12 (1.06 to 1.19)	< 0.001

All models were calculated using the hypotensive definition as mean arterial pressure < 65 mm Hg

^aThe multivariable logistic regression model with the explanatory variables including age, American Society of Anesthesiologists Physical Status (dichotomized as < 3 and ≥ 3), emergency, and surgical risk (dichotomized as low risk and others)

^bThe multivariable logistic regression model with the explanatory variables including age, sex, body mass index, American Society of Anesthesiologists Physical Status (I–IV, as four classes), emergency, surgical risk (1–3, as three classes), anesthesia type (intravenous or inhalational), and neuraxial anesthesia

aOR = adjusted odds ratio; AUC = area under the curve; CI = confidence interval