Table 2.

Number of hypotensive events and hypotension indices of the groups with and without 30-day and 90-day postoperative mortality

	Postoperative 30-day mortality			Postoperative 90-day mortality
	No N = 14,158	Yes N = 52	P value	No N = 13,196	Yes N = 138	P value
Postinduction
Any, n/total N (%)	11,583/14,158 (82%)	44/52 (85%)	0.72a	10,829/13,196 (82%)	117/138 (85%)	0.50a
Total duration (min), median [IQR]	11 [2–20]	13 [4–27]	0.17b	11 [2–20]	12 [4–23]	0.19b
Proportion (%), median [IQR]	27 [6–49]	31 [11–54]	0.25b	27 [6–49]	31 [9–52]	0.21b
AUC (mm Hg·min−1), median [IQR]	53 [5–136]	98 [12–172]	0.07b	54 [6–137]	84 [14–162]	0.02b
Proportion of AUC (mm Hg), median [IQR]	1.31 [0.14–3.29]	2.01 [0.29–4.52]	0.08b	1.32 [0.14–3.29]	1.93 [0.33–4.01]	0.01b
Intraoperative
Any, n/total N (%)	11,928/14,158 (84%)	47/52 (90%)	0.34a	11,139/13,196 (84%)	122/138 (88%)	0.24a
Total duration (min), median [IQR]	27 [5–71]	78 [14–138]	0.001b	27 [5–71]	56 [8–117]	< 0.001b
Proportion (%), median [IQR]	16 [3–43]	40 [10–82]	< 0.001b	16 [3–43]	31 [8–66]	< 0.001b
AUC (mm Hg·min−1), median [IQR]	95 [10–328]	370 [31–899]	< 0.001b	96 [10–328]	281 [30–751]	< 0.001b
Proportion of AUC (mm Hg), median [IQR]	0.55 [0.06–1.89]	1.74 [0.33–5.83]	< 0.001b	0.56 [0.06–1.86]	1.44 [0.15–3.68]	< 0.001b

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

^aFisher's exact test

^bMann–Whitney U test

AUC = area under the curve; IQR = interquartile range