a significant trendp < 0.001
In Cho et al., 8 stratifying of the patients according to ED status (normal, mild, moderate and complete) showed a significant trend connecting the severity of ED to the duration of alcohol consumption ( p < 0.001), but similarly using multivariate regression analysis independent predictors for all types of ED: alcohol consumption ( p < 0.05) and exercise ( p < 0.01) were negative independent risk factors of ED.