This page is being served from the Urological Sciences Research Foundation web repository, and was originally posted between 1996-2008. In January 2009 USRF’s founder, Dr. Leonard S. Marks and his staff joined UCLA’s Department of Urology where they are continuing their research. Click for more information.

Figure 3. Scattergrams showing relationship between responses of patient (vertical axis) and partner (horizontal axis)on IIEF total score before (a) and after (b) sildenafil treatment. Patient and partner assessments of erectile function are directly correlated.