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Further evidence of the reliability and validity of the premature ejaculation diagnostic tool


This study details the further validation of the Premature Ejaculation Diagnostic Tool (PEDT), a five-item tool, developed to systematically apply the Diagnostic and Statistical Manual of Mental Disorders, revised version 4 (DSM-IV-TR), criteria in diagnosing presence or absence of premature ejaculation (PE). A total of 102 men completed the PEDT and were then interviewed by one of the seven clinical experts, who made a diagnosis of presence or absence of PE. The diagnoses from these two methods were compared to assess the convergent validity of PEDT. Retest reliability was also assessed, by men completing the PEDT a second time, approximately 2 weeks after the first administration. The level of agreement between clinical expert and PEDT diagnoses was very high (κ-statistic=0.80 (95% CI=0.68–0.92)), and retest reliability was very good – Intraclass correlation coefficient=0.88. In summary, the PEDT is extensively validated, self-report measure that can systematically assess DSM-IV-TR criteria to provide accurate diagnoses of PE/no-PE.

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Correspondence to T Symonds.

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Co-authors Dr Perelman, Dr Althof and Dr Giuliano were paid consultants to Pfizer Ltd.

Appendix: PE Diagnostic Tool

Appendix: PE Diagnostic Tool

Tool for assessing premature ejaculation

Table A1

Table 4 Table a1

This is a questionnaire to help identify men who may have a problem with ejaculating too soon during sexual activity. Even if you do not have difficulties, please answer all the questions.

  • Please mark () the box that best represents your answer for each of the questions below.

  • Please mark only one box for each question.

  • Remember there are no right or wrong answers to these questions.

  • While your experiences may change from time to time what we’re interested in here is your general experience with intercourse.


Ejaculation here refers to ejaculation (release of semen) after penetration (when your penis enters your partner).

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Symonds, T., Perelman, M., Althof, S. et al. Further evidence of the reliability and validity of the premature ejaculation diagnostic tool. Int J Impot Res 19, 521–525 (2007).

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