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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Circ Arrhythm Electrophysiol. 2013 Oct 12;6(6):1156–1162. doi: 10.1161/CIRCEP.113.000411

Figure 2.

Figure 2

ROC curves for LVEF ≤35% and ECG (combination of QRS score ≥5 and QRS-T angle ≥105°) to discriminate the risk of death. (A) Individual ROC curves for LVEF ≤35% (AUC=0.57 [0.55-0.60]) and for ECG (AUC=0.62 [0.59-0.65]). (B) ROC curve from the model combining LVEF and ECG (AUC=0.65 [0.62-0.69]). There was an increase in AUC from LVEF alone to LVEF+ECG (p<0.0001). This was driven by an increase in sensitivity for the ECG to detect patients with increased risk of death in patients with LVEF >35%.