Erectile dysfunction (ED) is a common problem. Approximately 50% of men aged over 50 years report some degree of inability to generate and/or maintain an erection suitable for vaginal penetration ...

IIEF-5: Kruskal-Wallis H test for all groups: P = 0.003. Wilcoxon rank sum test for arteriogenic versus venogenic: P = 0.912 (adjusted α = 0.017). IQR, interquartile range. Data in parentheses ...