Psychometric validation of a sexual quality of life questionnaire for use in men with premature ejaculation or erectile dysfunction

The Journal of Sexual Medicine
Lucy AbrahamMark Morris

Abstract

An instrument that can systematically capture the impact of sexual dysfunction on quality of life (QoL) in men is needed. To psychometrically validate a sexual QoL instrument for men (SQOL-M) with premature ejaculation (PE) or erectile dysfunction (ED). The main assessment populations were men participating in clinical trials of treatments for PE or ED. Men with PE had a confirmed intravaginal ejaculatory latency time of < or = 2 minutes in > or = 70% of attempts. Men with ED had a score of > 21 on the International Index of Erectile Function (IIEF). Confirmatory psychometric testing was conducted in further groups of men with PE. The internal consistency, convergent and discriminant validity, test-retest reliability, and known-groups validity of the instrument were assessed. An 11-item version of the SQOL-M was produced following factor analyses on men with either PE or ED. Psychometric testing showed no overlap between items and good item-total correlations. Factor analysis confirmed a one-factor solution. Excellent internal consistency was demonstrated, with a Cronbach's alpha of > or = 0.82 in all groups. In men reporting no change in their symptoms, the SQOL-M showed excellent test-retest reliability: the intraclass correl...Continue Reading

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