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ROC curves ROC curves of NGAL, APACHE II score, eGFR, sCr and NGAL + APACHE II score for predicting AKI and mortality. (a) ROC curves for predicting AKI; (b) ROC curves for predicting 7-day mortality; (c) ROC curves for predicting 28-day mortality.
APACHE II: acute physiology and chronic health evaluation II; eGFR: estimated glomerular filtration rate; NGAL: neutrophil gelatinase-associated lipocalin; ROC: receiver operating characteristic.
