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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 3.

Figure 3

Mortality risk according to quartiles of quantitative ECG measures. Only shown are measures with χ2> 50. Log-rank P-value for all <.001. Quartile values: ST segment deviation (Q1: <0.29 mV, Q2: 0.29-0.68, Q3: 0.68-1.2, Q4: ≥1.2), QRS axis (Q1: <5 degrees, Q2: 5-30, Q3: 30-54, Q4: ≥54), ST segment slope (Q1: <30 mV, Q2: 30-58, Q3: 58-97, Q4: ≥97), T-wave amplitude (Q1: <0.18 mV, Q2: 0.18-0.28, Q3: 0.28-0.40, Q4: ≥0.40), ventricular rate (Q1: <59 bpm, Q2: 59-67, Q3: 67-75, Q4: ≥75), PR interval (Q1: <148 ms, Q2: 148-164, Q3: 164-180, Q4: ≥180), Cornell voltage (Q1: <0.98 mV, Q2: 0.98-1.31, Q3: 1.31-1.68, Q4: ≥1.68), and P-wave duration (Q1: <104 ms, Q2: 104-112, Q3: 112-120, Q4: ≥120). Error bars indicate 95% confidence intervals.