The Masturbation Erection Index (MEI): validation of a new psychometric tool, derived from the six-item version of the International Index of Erectile Function (IIEF-6) and from the Erection Hardness Score (EHS), for measuring erectile function during masturbation.
Erika LimoncinGiovanni L GravinaFrancesco LottiElisa MaseroliGiacomo CioccaGiovanni CoronaMario MaggiYacov ReismanGiancarlo BalerciaAndrea LenziEmmanuele Angelo JanniniPublished in: BJU international (2018)
The MEI showed good internal consistency and a good level of agreement with the IIEF-6. Hence, the MEI fulfills the major psychometric requirements for measuring EF during masturbation.