Table 3.

Predictive ability of the EuroSCORE risk score model and comparision with suggested modified systems.

Model	Area under the ROC curve	SD
(i) original EuroSCORE weights, „simple additive" version (locally calibrated)	0.753	0.018
(ii) original EuroSCORE weights, „logistic" version (locally calibrated)	0.757	0.018
(iii) all EuroSCORE variables with weights from institute specific regression	0.776	0.018
(iv) same as model (iii) but CC as continuous value substituted for serum creatinine	0.786	0.017
(v) same as model (iii) but CC as binarized value (threshold >55 ml/min) substituted for serum creatinine	0.787	0.017

CC: creatinine clearance calculated according to the Cockcroft-Gault formula