Fig. 2

Kaplan–Meier survival curves for the smoking- and drinking-related groups of patients with dilated cardiomyopathy. The upper panel shows the survival curves among the non-smoker, mild-to-moderate-smoker and heavy-smoker groups (23.8, 20.8 and 24 %; log-rank χ ² = 1.281, P = 0.527). The lower panel shows the survival curves among the non-drinker, mild-drinker and moderate-drinker groups (23.7, 23.2 and 22.3 %; log-rank χ ² = 2.343, P = 0.310)