Table 4.

Feature importance of postinduction and intraoperative hypotension indices for predicting 30-day and 90-day postoperative mortality using the RUSBoost models

Hypotensive indices	30-day mortality		90-day mortality
	PIH	IOH	PIH	IOH
Duration, median [IQR]	0.025 [0.016–0.034]	0.062 [0.049–0.081]	0.029 [0.022–0.042]	0.047 [0.035–0.056]
Proportion, median [IQR]	0.024 [0.016–0.033]	0.050 [0.035–0.066]	0.032 [0.021–0.048]	0.037 [0.028–0.044]
AUC, median [IQR]	0.018 [0.010–0.028]	0.061 [0.043–0.072]	0.031 [0.022–0.040]	0.042 [0.036–0.053]
Proportion of AUC, median [IQR]	0.017 [0.010–0.026]	0.048 [0.033–0.064]	0.028 [0.020–0.037]	0.041 [0.034–0.055]

AUC = area under the curve; IOH = intraoperative hypotension; IQR = interquartile range; PIH = postinduction hypotension