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Number of visits with a major ECG abnormality and risk of CVD. The red line represents the log hazard (y-axis) of CVD risk associated with the number of years with any major ECG abnormality. The yellow dashed lines represent 95% point-wise CIs for the log hazard (y-axis) of CVD risk associated with the number of years with any major ECG abnormality. *Visits numbering more than five were set to five.
