Department of Infertility and Sexual Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
Chair of Endocrinology & Medical Sexology (ENDOSEX), Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy.
Andrology. 2022 Feb;10(2):333-339. doi: 10.1111/andr.13125. Epub 2021 Dec 13.
Premature ejaculation (PE) is a highly prevalent male sexual dysfunction. Its current definition, together with the most used diagnostic tools, does not include nonvaginal sexual intercourse such as anal sex, self-masturbation and/or partnered-masturbation, and other forms of sexual stimulation. However, diagnostic psychometry currently available is exclusively evaluating PE in the vaginal coitus.
To validate a new tool, the masturbatory premature ejaculation diagnostic tool (MPEDT), by assessing the control over ejaculation and its psychological effects during self-masturbation, rather than heterosexual vaginal intercourse.
We studied 135 male patients aging from 18 to 40 years seeking medical care for PE in the Infertility and Sexual Medicine Department from June to September 2020. All the participants were asked to fill the premature ejaculation diagnostic tool PEDT and MPEDT questionnaires to estimate the PE symptoms during, respectively, intercourse and self-masturbation. The reliability/validity, the factor analysis of the tool, and the diagnostic sensitivity/specificity of MPEDT were calculated.
The overall Cronbach alpha was 0.884. In our adjusted model, both root mean square error of approximation (RMSEA) and standardized root mean square residual (SRMR) were lower than 0.08, while goodness of fit index, adjusted goodness of fit index, non-normed fit index (NNFI), and comparative fit index (CFI) were higher than 0.9. The area under the ROC curve (AUC) is 0.943 ± 0.015. The results suggest MPEDT points being ≤5 as "normal," ≥7 as "PE during self-masturbation," and 6 as "suspected PE," with the sensitivity of 91.9% and specificity of 88.1%.
An efficient diagnostic psychometric tool is needed for the individuals who, based on the impaired control over ejaculation during self-masturbation, may also suffer from PE during partnered intercourse. MPEDT is able to evaluate the existence of PE symptoms not necessarily during heterosexual intercourse but rather during self-masturbation, possibly aiding to the diagnosis, as well as planning and follow-up of a prompt therapeutical strategy.
MPEDT could be considered a new, objective, and reliable diagnostic tool for the evaluation of the existence of PE symptoms.
早泄（PE）是一种常见的男性性功能障碍。目前的定义以及最常用的诊断工具都不包括非阴道性交，如肛交、自慰和/或伴侣自慰以及其他形式的性刺激。然而，目前可用于诊断的心理计量学方法仅在阴道交合时评估 PE。
通过评估自慰时的射精控制和心理影响，验证一种新的工具，即自慰性早泄诊断工具（MPEDT），以评估非阴道交合时的 PE 症状。
我们研究了 2020 年 6 月至 9 月期间因 PE 到不孕不育和性医学科就诊的 135 名 18 至 40 岁的男性患者。所有参与者都被要求填写早泄诊断工具 PEDT 和 MPEDT 问卷，以分别估计性交和自慰时的 PE 症状。计算了 MPEDT 的可靠性/有效性、工具的因素分析以及诊断的敏感性/特异性。
总体 Cronbach alpha 为 0.884。在我们的调整模型中，均方根误差近似值（RMSEA）和标准化均方根残差（SRMR）均低于 0.08，而拟合优度指数、调整拟合优度指数、非归一化拟合指数（NNFI）和比较拟合指数（CFI）均高于 0.9。ROC 曲线下面积（AUC）为 0.943±0.015。结果表明，MPEDT 得分为≤5 为“正常”，≥7 为“自慰时的早泄”，6 为“疑似早泄”，敏感性为 91.9%，特异性为 88.1%。
对于那些基于自慰时射精控制受损的个体，可能也会在伴侣性交时发生 PE，需要一种有效的诊断心理计量学工具。MPEDT 能够评估在异性性交时不一定存在的 PE 症状，而是在自慰时，这可能有助于诊断，以及计划和随访及时的治疗策略。
MPEDT 可被视为一种新的、客观的、可靠的诊断工具，用于评估 PE 症状的存在。
