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. Author manuscript; available in PMC: 2014 Oct 30.
Published in final edited form as: Am Heart J. 2009 Jul;158(1):61–70.e1. doi: 10.1016/j.ahj.2009.04.015

Figure 2.

Figure 2

To address possible selection bias, plotted is observed mortality according to availability of digital ECG data and categories of predicted risk by our previously validated prognostic model13 that did not include ECG variables.