Improvement in erection hardness and intercourse success with first dose of sildenafil citrate 100 mg
Abstract
John P Mulhall,1 Dana L Creanga,2 Vera J Stecher31Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; 2Consultant to Pfizer Inc., New York, NY, USA; 3Medical Affairs, Primary Care Business Unit, Pfizer Inc., New York, NY, USAPurpose: To determine, in men with erectile dysfunction (ED), the extent of improvement in erection hardness and in the rate of successful sexual intercourse (SSI) during the final intercourse attempt using sildenafil 50 mg compared with the subsequent initial attempt after a dose increase to 100 mg.Patients and methods: This post hoc analysis used data from two randomized, double-blind, placebo-controlled studies of flexible-dose sildenafil for the treatment of men with ED, who were given sildenafil 50 mg or matching placebo, to be taken as needed before sexual intercourse. After 2 weeks, those with no tolerability concerns were titrated up to 100 mg, forming the subgroup of this analysis. The main outcome measures were event log data, including an Erection Hardness Score (EHS) and a question on SSI (“Did your erection last long enough for you to have successful sexual intercourse?”), for each attempt at sexual intercourse, analyzed by study and treatment group (sildenafil or placebo). Statistical comparisons were conducted by using the Fisher's exact test.Results: In both studies, the sildenafil group had a larger proportion of EHS4 (completely hard and fully rigid) erections (P < 0.001) and SSI (P <…
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