Extended Table 4.

Model performance (AUC) of the original and extended VA models at UM, by outcome stage, by race

Outcome			UM Test AUC(95% Cl)
	All	Caucasian	African American	Other	Unknown
Multiclass
Original VA model	0.8685(0.8644, 0.8726)	0.8697(0.8649, 0.8742)	0.8625(0.8500, 0.8714)	0.8689(0.8421, 0.8861)	0.8576(0.8375, 0.8916)
Extended VA model	0.8780(0.8749, 0.8826)	0.8799(0.8755, 0.8850)	0.8733(0.8622, 0.8806)	0.8759(0.8529, 0.8936)	0.8565(0.8385, 0.8885)
AKI-1+
Incidence	3.76%(58,382/1,551,354)	3.71 %(47,489/1,281,347)	4.22%(7,389/174,932)	3.49%(2,688/77,092)	4.54%(816/17,983)
Original VA model	0.8469(0.8453, 0.8484)	0.8460(0.8443, 0.8477)	0.8433(0.8390, 0.8476)	0.8561(0.8491, 0.8631)	0.8859(0.8762, 0.8957)
Extended VA model	0.8523(0.8508, 0.8538)	0.8514(0.8497, 0.8531)	0.8488(0.8446, 0.8530)	0.8624(0.8555, 0.8693)	0.8905(0.8811, 0.8999)
AKI-2+
Incidence	0.86%(15,076/1,753,474)	0.83%(12,064/1,445,319)	1.01 %(2,033/201,650)	0.80%(686/86,207)	1.44%(293/20,298)
Original VA model	0.6550(0.6494, 0.6606)	0.6519(0.6456, 0.6581)	0.6535(0.6383, 0.6687)	0.6680(0.6412, 0.6948)	0.7646(0.7312, 0.7980)
Extended VA model	0.8181(0.8138, 0.8224)	0.8158(0.8110, 0.8205)	0.8215(0.8101, 0.8330)	0.8406(0.8210, 0.8601)	0.8342(0.8040, 0.8644)
AKI-3+
Incidence	0.39%(6,976/1,790,447)	0.37%(5,451/1,475,447)	0.50%(1,038/206,309)	0.40%(350/87,868)	0.66%(137/20,742)
Original VA model	0.7981(0.7919, 0.8044)	0.7925(0.7853, 0.7998)	0.8187(0.804, 0.8333)	0.8063(0.7776, 0.8349)	0.8585(0.8190, 0.8979)
Extended VA model	0.8722(0.8666, 0.8778)	0.8763(0.8701, 0.8826)	0.8518(0.8366, 0.8670)	0.8626(0.8367, 0.8885)	0.8980(0.8632, 0.9327)
AKI-3D
Incidence	0.08%(1,412/1,817,604)	0.07%(981/1,496,642)	0.12%(258/210,914)	0.15%(134/89,093)	0.19%(39/20,955)
Original VA model	0.9558(0.9507, 0.9609)	0.9546(0.9483, 0.9609)	0.9584(0.9503, 0.9666)	0.9540(0.9354, 0.9725)	0.9581(0.9082, 1)
Extended VA model	0.9346(0.9258, 0.9433)	0.9375(0.9276, 0.9475)	0.9332(0.9118, 0.9546)	0.9299(0.9023, 0.9575)	0.8748(0.7809, 0.9687)