The journal of sexual medicine · 2026
Defining clinically relevant responses in erectile function: an SMSNA position statement.
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Trost Landon, Yafi Faysal, Shindel Alan, Khera Mohit, Rosen Raymond C, Bajic Petar, Bernie Helen, Gross Martin, Hannan Johanna, Helo Sevann, Jenkins Ii Lawrence, Podlasek Carol, Watter Daniel, Ziegelmann Matthew, Köhler Tobias
Аннотация
BACKGROUND: To date, no scoring system has adequately defined clinical efficacy of erectile dysfunction (ED) therapies when evaluating differences between cohorts or in meta-analytic studies.
AIM: To outline the minimal criteria required for any therapy to be considered clinically effective in the treatment of ED.
METHODS: An analytic review was performed of standardized ED questionnaires, with a particular emphasis placed on the International Index of Erectile Function, Erectile Function Domain (IIEF-EFD), and the minimally clinically important difference (MCID) concept. The data were used to create a societal position statement and recommendations on best practices within clinical trials to determine treatment efficacy.
OUTCOMES: The SMSNA provided 6 key statements and recommendations to suggest best practices and define minimal thresholds for improvements required for an ED therapy to be considered clinically effective.
RESULTS: The IIEF-EFD currently represents the preferred standardized questionnaire to evaluate for changes in erectile function post-treatment and is the only questionnaire adequate to assess primary outcomes. To claim efficacy, investigational treatments must demonstrate MCID between cohorts (eg, 2-, 5-, or 7-point median improvements between groups among mild, moderate, or severe ED cohorts) in prospective, randomized, placebo-controlled, and adequately powered studies. In studies employing mixed-severity ED populations, a method of calculating an adjusted MCID was proposed based on statistical weighting principles. Similarly, a novel method for analyzing differences between cohorts in meta-analytic studies was presented to incorporate the concept of MCID. Based on these principles, the SMSNA would not support efficacy of a therapy based on statistical significance in a meta-analytic study alone. Similarly, studies claiming efficacy utilizing responder approaches (ie, statistically higher percentage of men achieving MCID between cohorts) would not be acceptable unless the median difference between groups on the IIEF-EFD achieved MCID.
CLINICAL IMPLICATIONS: The current position statement provides important, evidence-based data and scientific principles to help define what may be considered as an effective therapy in the treatment of ED. This framework provides a basis that decision-makers, clinicians, and patients may use to help differentiate clinically effective therapies.
STRENGTHS & LIMITATIONS: The published literature is limited by a lack of validated instruments and data defining MCID for ED therapies between cohorts and with meta-analytic studies. The current position statement provides important guidance on these areas of ambiguity pending further, definitive data.
CONCLUSION: The current position statement provides detailed guidance on key criteria required to conclude efficacy of therapies used to treat ED.
AIM: To outline the minimal criteria required for any therapy to be considered clinically effective in the treatment of ED.
METHODS: An analytic review was performed of standardized ED questionnaires, with a particular emphasis placed on the International Index of Erectile Function, Erectile Function Domain (IIEF-EFD), and the minimally clinically important difference (MCID) concept. The data were used to create a societal position statement and recommendations on best practices within clinical trials to determine treatment efficacy.
OUTCOMES: The SMSNA provided 6 key statements and recommendations to suggest best practices and define minimal thresholds for improvements required for an ED therapy to be considered clinically effective.
RESULTS: The IIEF-EFD currently represents the preferred standardized questionnaire to evaluate for changes in erectile function post-treatment and is the only questionnaire adequate to assess primary outcomes. To claim efficacy, investigational treatments must demonstrate MCID between cohorts (eg, 2-, 5-, or 7-point median improvements between groups among mild, moderate, or severe ED cohorts) in prospective, randomized, placebo-controlled, and adequately powered studies. In studies employing mixed-severity ED populations, a method of calculating an adjusted MCID was proposed based on statistical weighting principles. Similarly, a novel method for analyzing differences between cohorts in meta-analytic studies was presented to incorporate the concept of MCID. Based on these principles, the SMSNA would not support efficacy of a therapy based on statistical significance in a meta-analytic study alone. Similarly, studies claiming efficacy utilizing responder approaches (ie, statistically higher percentage of men achieving MCID between cohorts) would not be acceptable unless the median difference between groups on the IIEF-EFD achieved MCID.
CLINICAL IMPLICATIONS: The current position statement provides important, evidence-based data and scientific principles to help define what may be considered as an effective therapy in the treatment of ED. This framework provides a basis that decision-makers, clinicians, and patients may use to help differentiate clinically effective therapies.
STRENGTHS & LIMITATIONS: The published literature is limited by a lack of validated instruments and data defining MCID for ED therapies between cohorts and with meta-analytic studies. The current position statement provides important guidance on these areas of ambiguity pending further, definitive data.
CONCLUSION: The current position statement provides detailed guidance on key criteria required to conclude efficacy of therapies used to treat ED.