borderline significantP =0.08
Abnormal CFR had a borderline significant association with an increased risk of all‐cause mortality in univariate analysis but not after adjustment for age and sex (HR, 1.40; 95% CI, 0.96–2.07; P =0.08; adjusted HR, 1.23; 95% CI, 0.82–1.84; P =0.31) (Figure 4 ).