Data base from Efficacy of Sphincter Control Training and medical device in the treatment of premature ejaculation: A multicenter randomized controlled clinical trial. Fold Increase in IELT. As the main measure, the FI in the IELT was used, which was calculated using the geometric mean (GM)* of the posttreatment IELT (period B), calculated with the recorded times of the last two weeks of treatment, divided by the geometric mean of the IELT at the beginning of the treatment that served as the baseline (period A), calculated with the times of the two weeks of records prior to the random assignment to each group, FI = (GM of 8S)/(GM of prtr) (14). Geometric mean was calculated using mean of natural logarithm with each of the IELT calculated by the subject in each phase. The geometric mean uses its transform for its interpretation once expressed in seconds. PEDT. For the diagnosis and as a secondary measure, is a tool originally validated in the Spanish-speaking population, among other. The PEDT was used, consisting of five items that evaluate difficulty delaying ejaculation, ejaculation before the patient desires, ejaculation with little stimulation, frustration related to premature ejaculation and opinion of the partner on ejaculation. The test-retest reliability is .82, and all items discriminate in a statistically significant way between patients with PE and without PE, with a cut-off score for this diagnosis (13)