Premature ejaculation prevalence among young men who have sex with men: a cross-sectional study with internet users in the metropolitan region of São Paulo, Brazil.

Background: There are only a few studies about the prevalence and correlates of premature ejaculation (PE) among men who have sex with men (MSM).

Aim: (1) To estimate PE prevalence according to 3 assessment methods: self-reported time from penetration to ejaculation (ejaculation latency time [ELT]); Premature Ejaculation Diagnostic Tool (PEDT); and a direct question about the self-perception of ejaculation as being normal, too early (premature), or retarded. (2) To assess the agreement of the 3 assessment methods and identify factors associated with PE according to each method and their combination.

Premature Ejaculation Among Internet Users Living in the Metropolitan Region of São Paulo, Brazil: A Cross-Sectional Comparison Between the Premature Ejaculation Diagnostic Tool (PEDT) and Patient-Reported Latency Time and Perception.

Background: Premature ejaculation (PE) prevalence can vary according to different definitions, assessment methods and populational demographics and culture.

Aims: To investigate the differences between men classified as having "probable PE" (PEDT≥11), "possible PE" (PEDT = 9 or 10) or "no PE" (PEDT≤8) according to the Premature Ejaculation Diagnostic Tool (PEDT) criteria in regard to sociodemographic characteristics, and sexual and relational behavior. To assess the agreement of prevalence of PE according to 3 assessment methods: (i) the ejaculation latency time (ELT) according to the participant's memory; (ii) PEDT and (iii) a direct question about the self-perception of ejaculation as being normal, too early (premature) or retarded.

Preoperative Psychological Evaluation for Patients Referred for Penile Prosthesis Implantation.

Background: Patients may remain dissatisfied after penile prosthesis implantation for the treatment of erectile dysfunction. Studies showing the results of standardized protocols for preoperative psychological evaluation are lacking.

Purpose: To estimate the rate of patients considered psychologically unfit for penile prosthesis implantation and to compare their characteristics with those considered fit after the implementation of a standardized psychological profile evaluation protocol for men with erectile dysfunction.

Perceptions about penis size among supposedly healthy 40 to 60-year-old Brazilian men: a cross-sectional pilot study.

Context And Objective: Many men seek medical treatments complaining that their penises are too small (short) when in fact they are not (they are not cases of micropenis). The objective of the present study was to evaluate men's satisfaction with their own bodies and sex life and the prevalence of erectile dysfunction, among men who were not seeking medical or psychological advice.

Design And Setting: Cross-sectional study in a private, philanthropic hospital in São Paulo, Brazil.