Table 3. Results of the Random Forest model.

Model	Dataset	Stays	% of AKI	auROC [iqr]	Sensitivity	Specificity	Median lead time (h) (AKI after the first 24h of ICU stay)	LR+	LR-
Random Forest	Internal Test	1’749	15.2	0.884 [0.864–0.905]	82.0%	80.0%	15.5	4.10	0.24
Random Forest	eICU	6’985	15.5	0.877 [0.868–0.888]	83.0%	81.3%	14.0	4.44	0.23
Random Forest	Margherita Tre	1’025	6.1	0.911 [0.882.0.936]	82.5%	83.2%	23.0	4.91	0.20

auROC = area under receiving operator curve; LR + = likelihood positive ratio; LR- = likelihood negative ratio.