*Each hazard ratio was computed using a restricted cubic spline model
with the median ST-segment value of 114 ms as the reference, and was adjusted
for age, sex, race, heart rate, smoking, systolic blood pressure, diabetes, body
mass index, low-density lipoprotein cholesterol, antihypertensive medication
use, and left ventricular hypertrophy. Dotted-lines represent the 95%
confidence interval.