Combined assessment of myocardial damage and electrical disturbance in chronic heart failure

Table 4 Statistics for model fit and improvement with the addition of high heart-type fatty acid-binding protein and QRS prolongation predicted on the prediction of cardiac events

	Group 1	Group 2	P value
AUC of ROC curve	0.668	0.706	0.029
NRI (95%CI)	Ref	0.223 (0.073-0.372)	0.003
IDI (95%CI)	Ref	0.036 (0.015-0.056)	0.016

AUC: Area under the curve; CI: Confidence interval; IDI: Integrated discrimination improvement; NRI: Net reclassification improvement; ROC: Receiver operator characteristics. Group 1: Age + BNP + NYHA + eGFR; Group 2: Group 1 + H-FABP > 4.5 ng/mL + QRS duration ≥ 120 ms. BNP: Brain natriuretic peptide; eGFR: Estimated glomerular filtration rate; H-FABP: Heart-type fatty acid-binding protein; NYHA: New York Heart Association.