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The Masturbation Erection Index (MEI): validation of a new psychometric tool derived from the International Index of Erectile Function (IIEF-6) and…

A new interesting article has been published in BJU Int. 2018 Sep 26. doi: 10.1111/bju.14560. and titled:

The Masturbation Erection Index (MEI): validation of a new psychometric tool derived from the International Index of Erectile Function (IIEF-6) and…

Authors of this article are:
Limoncin E Gravina GL Lotti F Maseroli E Ciocca G Corona G Maggi M Reisman Y Balercia G Lenzi A Jannini EA.

A summary of the article is shown below:
OBJECTIVES: To validate a psychometric instrument, the Masturbation Erection Index (MEI) able to evaluate erectile function (EF) during masturbation. In fact, although the evaluation of EF during masturbation is pivotal in evaluating erectile dysfunction (ED), to date no specific psychometric tools have been developed to measure it both in the routine clinical practice and in the experimental setting.SUBJECTS AND METHODS: Of 560 male patients attending for the first time our andrological outpatient clinic, 99 (17.7%) were affected by ED. As a control group, we enrolled 102 sexually healthy men. All subjects were requested to fill out both the abridged International Index of Erectile Function (IIEF-6) and the MEI. The MEI was used together with a standardized tool, the Erection Hardness Score (EHS). The MEI was validated in terms of content validity. Test-retest reliability was assessed using the Intraclass Correlation Coefficient (ICC). Internal consistency was evaluated by the Cronbach’s alpha. The comparability between MEI and IIEF-6 in measuring EF was tested by the Bland & Altman analysis. The Concordance Correlation Coefficient (CCC) between the two questionnaires was also determined.RESULTS: Internal consistency of MEI was > 0.93. Test-retest reliability was 0.982 (95% CI 0.975 to 0.987). The Bland & Altman analysis showed a good level of agreement between IIEF-6 and MEI in the whole ED population, with stronger agreement in the organic ED-subpopulation. The estimated AUC of MEI was 0.983 (p<0.0001; 95% CI 0,954 to 0,996) with a score of 27 or lower as the optimal cut-off to discriminate between the presence or the absence of ED during self-induced masturbation. The CCC, the Pearson ρ and the Bias Cb were 0.951 (95% CI 0.936 to 0.962), 0.968, and 0.982, respectively.CONCLUSION: The MEI showed good internal consistency and good level of agreement with IIEF-6. Hence, the MEI fulfills the major psychometric requirements for measuring EF during masturbation. This article is protected by copyright. All rights reserved.This article is protected by copyright. All rights reserved.
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This article is a good source of information and a good way to become familiar with topics such as: Erection Hardness Score (EHS);IIEF-6;erectile function;masturbation.

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