Table 2.

Cox regression analysis

Electrocardiographic sign	p	Hazard ratio* (95% CI)
fQRS	0.024	0.393 (0.174–0.887)
Q wave	0.419	0.720 (0.324–1.597)

^*Derived after controlling for age, diabetes, hypertension, hypercholesterolemia, family history of coronary artery disease, and smoking