To evaluate the effect of vardenafil on both erectile function (EF) and treatment satisfaction (an aspect of quality of life) in men and their partners, as erectile dysfunction (ED) has a profound effect on patients’ quality of life and that of their partners, and treatment for ED tends to be focused on improving functional measures of EF.
PATIENTS, SUBJECTS AND METHODS
For this randomized, double-blind, placebo-controlled trial, men with ED for >6 months, according to the USA National Institutes of Health Consensus Statement, were recruited. In all, 611 patients were randomized to treatment with either vardenafil (10 mg for 4 weeks, titrated to preferred dose, 5, 10 or 20 mg, during the next 8 weeks, and maintained at preferred dose for the following 14 weeks), or placebo.
At 18 weeks (primary endpoint), the mean improvement in the EF domain of International Index of EF (IIEF-EF) vs baseline was significantly greater with vardenafil than placebo (12.70 vs 1.69, P < 0.001). This was accompanied by significant benefits at 26 weeks and in various secondary variables relating to sexual satisfaction. Qualitative assessment of the treatment effect revealed three categories of importance to patients: effectiveness, confidence and quality of life. There were significant linear correlations between patients’ EF and treatment satisfaction, and between patients’ EF and their partners’ treatment satisfaction.
Functional improvements in response to vardenafil treatment are significantly correlated with treatment satisfaction for both patients with ED and their partners. These findings apply to patients with a wide range of baseline characteristics.