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Time to onset of erection resulting in successful intercourse. *P=0.0343, †P=0.0011, ‡P=0.0001. Copyright © 2003. Reproduced with permission from Padma-Nathan H, Stecher VJ, Sweeney M, et al. 2003. Minimal time to successful intercourse after sildenafil citrate: results of a randomized, double-blind, placebo-controlled trial. Urology, 62:400–3.
Abbreviations: SEP3, Sexual Encounter Profile question 3.
