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EDITS: development of questionnaires for evaluating satisfaction with treatments for erectile dysfunction 1

  • Stanley E Althof
    Correspondence
    Reprint requests: Stanley E. Althof, M.D., Center for Marital and Sexual Health, Three Commerce Park Square, 23230 Chagrin Boulevard, Suite 350, Beachwood, OH 44102-5402
    Affiliations
    Department of Urology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland, Cleveland, Ohio, USA

    Center for Marital and Sexual Health, Beachwood, Ohio, USA
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  • Eric W Corty
    Affiliations
    Center for Marital and Sexual Health, Beachwood, Ohio, USA

    School of Humanities and Social Sciences, Penn State Erie, Behrend College, Erie, Pennsylvania, USA
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  • Stephen B Levine
    Affiliations
    Center for Marital and Sexual Health, Beachwood, Ohio, USA

    Department of Psychiatry, Case Western Reserve University School of Medicine and University Hospitals of Cleveland, Cleveland, Ohio, USA
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  • Frederic Levine
    Affiliations
    Department of Urology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland, Cleveland, Ohio, USA

    Division of Urology, Mount Sinai Hospital, Cleveland, Ohio, USA
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  • Arthur L Burnett
    Affiliations
    Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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  • Kevin McVary
    Affiliations
    Department of Urology, Northwestern University School of Medicine, Chicago, Illinois, USA
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  • Vera Stecher
    Affiliations
    Pfizer Inc., New York, New York, USA
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  • Allen D Seftel
    Footnotes
    Affiliations
    Department of Urology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland, Cleveland, Ohio, USA
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  • Author Footnotes
    2 S.E. Althof, E.W. Corty, S.B. Levine, A.L. Burnett, K. McVary, and A.D. Seftel are paid consultants to and V. Stecher is an employee of Pfizer, Inc.

      Abstract

      Objectives. To develop Patient and Partner versions of a psychometrically sound questionnaire, the EDITS (Erectile Dysfunction Inventory of Treatment Satisfaction), to assess satisfaction with medical treatments for erectile dysfunction.
      Methods. Treatment satisfaction differs from treatment efficacy as it focuses on a person’s subjective evaluation of treatment received. Twenty-nine items representing the domain of treatment satisfaction for men and 20 representing partner satisfaction were generated. Two independent samples of 28 and 29 couples completed all items at two points in time. Spearman rank-order correlations were derived to assess test-retest reliability and couple coefficients of validity. Internal consistency coefficients were calculated for both Patient and Partner versions and a content validity panel was used to analyze content validity.
      Results. Only items that met all the following criteria were selected to comprise the final questionnaires: (a) range of response four or more out of five; (b) test-retest reliability greater than 0.70; (c) ratings by at least 70% of the content validity panel as belonging in and being important for the domain; and (d) significant correlation between the subjects’ and partners’ responses. Eleven patient items met criteria and formed the Patient EDITS; five partner items met criteria and formed the Partner EDITS. Scores on the two inventories were normally distributed with internal consistencies of 0.90 and 0.76, respectively. Test-retest reliability for the Patient EDITS was 0.98; for the Partner EDITS, it was 0.83.
      Conclusions. Reliability and validity were well established, enabling the EDITSs to be used to assess satisfaction with treatment modalities for erectile dysfunction and to explore the impact of patient and partner satisfaction on treatment continuation.
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