Nguyen Hoai Bac, Pham Minh Quan, Nguyen Cao Thang, Sansone Andrea, Colonnello Elena, Jannini Emmanuele A
Hanoi Medical University, Hanoi, Vietnam.
Department of Andrology and Sexual Medicine, Hanoi Medical University's Hospital, Hanoi, Vietnam.
Andrology. 2021 May;9(3):906-915. doi: 10.1111/andr.12978. Epub 2021 Feb 9.
Penis size is a highly sensitive topic, which has often raised concerns associated with human masculinity and male sexual health. Although data regarding penile dimensions have been published worldwide, little is known about these measurements in South-East Asian countries.
This study aimed to provide the reference range in penile length, circumference, and diameter of Vietnamese men and their variations among men with erectile dysfunction and other diseases.
Information about flaccid length, stretched length, mid-shaft circumference, and glans diameter from the health records of 14,597 men attending the Andrology Consultation was collected. These men were classified into three groups being regular reproductive health screening group, sexual dysfunction group, and other disease groups.
We found that penile dimensions follow a non-parametric distribution, as tested by Kolmogorov-Smirnov test. The median values are 9.03 cm for flaccid length, 14.67 cm for stretched length, 8.39 cm for mid-shaft circumference, and 2.86 cm for unaroused glans diameter. Length and girth of the penis also changed among the different groups, especially in flaccid state; specifically, men with erectile dysfunction had a greater value in all penile dimensions except for change ratio compared with other groups. Circumcision, which rarely occurs in Vietnam, was associated with a 2 mm reduced penis length.
Findings on correlations between penile dimensions and somatometric parameters from previous studies are questionable and some measurements, such as glans dimension, have not been thoroughly investigated so far. Nevertheless, penile dimensions provide useful insight concerning conditions affecting sexual development and might be a valuable parameter in the assessment of erectile dysfunction.
Results of this study provide informative materials for the assessment of penile size, including reference values drawn from a large sample of Vietnamese men that can be useful in clinical practice and sexual health education.
阴茎大小是一个高度敏感的话题，常常引发与人类男性气质和男性性健康相关的担忧。尽管关于阴茎尺寸的数据已在全球范围内发表，但对于东南亚国家的这些测量数据却知之甚少。
本研究旨在提供越南男性阴茎长度、周长和直径的参考范围，以及勃起功能障碍和其他疾病男性之间的差异。
收集了14597名前来男科咨询的男性健康记录中的疲软长度、拉伸长度、阴茎中段周长和龟头直径信息。这些男性被分为三组：常规生殖健康筛查组、性功能障碍组和其他疾病组。
通过柯尔莫哥洛夫-斯米尔诺夫检验，我们发现阴茎尺寸呈非参数分布。疲软长度的中位数为9.03厘米，拉伸长度为14.67厘米，阴茎中段周长为8.39厘米，未勃起龟头直径为2.86厘米。阴茎的长度和周长在不同组之间也有所变化，尤其是在疲软状态下；具体而言，与其他组相比，勃起功能障碍男性除变化率外的所有阴茎尺寸值都更大。在越南很少见的包皮环切术与阴茎长度减少2毫米有关。
先前研究中关于阴茎尺寸与身体测量参数之间相关性的发现存在疑问，一些测量，如龟头尺寸，迄今为止尚未得到充分研究。然而，阴茎尺寸为影响性发育的状况提供了有用的见解，并且可能是评估勃起功能障碍的一个有价值的参数。
本研究结果为阴茎大小的评估提供了信息资料，包括从大量越南男性样本中得出的参考值，这些值在临床实践和性健康教育中可能有用。
