The Role of Initial Success Rates and Other Factors in Determining Reliability of Outcomes of Phosphodiesterase Inhibitor Therapy for Erectile Dysfunction: A Pooled Analysis of 17 Placebo‐Controlled Trials of Tadalafil for Use as Needed

The findings affirm the reliability of successful outcomes with tadalafil treatment and that first‐attempt success is a critical factor affecting subsequent outcomes. The results further show that even among men who did not succeed on first attempt, a substantial proportion will have successful outcomes if treatment is maintained. Sontag A, Rosen RC, Litman HJ, Ni X, and Araujo AB. The role of initial success rates and other factors in determining reliability of outcomes of phosphodiesterase inhibitor therapy for erectile dysfunction: A pooled analysis of 17 placebo‐controlled trials of tadalafil for use as needed. J Sex Med **;**:**-**.