Sexual Habits Affect Penis Size in Adulthood (ShiP)

October 19, 2024 updated by: Kuat Oshakbayev, University Medical Center, Kazakhstan

Sexual Habits in Childhood Affect Penis Size in Later Adulthood: a Cross-sectional Study

Purpose: to assess in Kazakh adult males erect penis sizes, and study an influence of their natural physiological events and behavioral habits during their growing ages on their penile sizes nowadays.

Study Design: An observational cross-sectional survey pilot study using a correlational design with the intention-to-treat principle.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Participants. A total of 282 adult Kazakh males from the Republic of Kazakhstan and who have been visited at the urology units of three university centers in the biggest cities of the Republic of Kazakhstan (Astana, Almaty, and Karaganda) were prospectively included in the study, which took place between January 2020 and January 2021.

Measurements of the penis erect length and girth were by two doctor-urologists according to the method of Veale D et al. (2015).

Statistical analysis. Two-tailed Student's t-test, Pearson correlation and multivariate tests of the MANOVA and MANCOVA (body height as covariate) were used.

Sample size estimation. In a cross-sectional observational study in assessment of erect penis size of Kazakh adult males we supposed that the primary interest lies in assessment of erect penis sizes in the three cities (k=3). The investigators wish to be 95% sure of detecting when the mean erect penis sizes not exceed 1 mm (i.e., 1-β=0.95, and m1=1, m2=0). The standard deviation of erect penis size is likely to be 1.56 mm (i.e. SD=1.56) with a statistical power of 95% and significance level of 2.5% with the Bonferroni correction based on one-sided hypothesis testing. At the 5% Type I error rate (i.e., α=0.05), the sample size of the survey is 196.

Study Type

Observational

Enrollment (Actual)

282

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Kazakhstan
      • Astana, Kazakhstan, 010000
        • Kuat Pernekulovich Oshakbayev

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

19 years to 31 years (Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

A total of 282 adult Kazakh males from the Republic of Kazakhstan and who have been visited at the urology units of three university centers in the biggest cities of the Republic of Kazakhstan (Astana, Almaty, and Karaganda) were prospectively included in the study, which took place between January 2020 and January 2021.

Description

Inclusion Criteria:

  • male gender aged from 23 to 35 years
  • fill out the questionnaire
  • BMI ≤ 29.9 kilogram per meter square
  • a male who has at least one healthy native child
  • no non-communicable chronic diseases.

Exclusion Criteria:

  • female gender
  • BMI ≥ 30.0 kilogram per meter square
  • infertility
  • erectile dysfunction, previous pelvic surgery, suspected hypogonadism, penile disease, or deformity
  • specific treatment with androgens
  • alcohol or drug abuse
  • history of alcohol consumption ≥ 30 g/day within the past 5 years.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Crossover
  • Time Perspectives: Cross-Sectional

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
erect penis length and girth
Time Frame: baseline
centimeter
baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Medical Center, Kazakhstan

Investigators

  • Study Director: Bibazhar Dukenbayeva, Dr., ANADETO medical center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2019

Primary Completion (Actual)

November 30, 2020

Study Completion (Actual)

January 31, 2021

Study Registration Dates

First Submitted

November 28, 2022

First Submitted That Met QC Criteria

December 14, 2022

First Posted (Actual)

December 16, 2022

Study Record Updates

Last Update Posted (Actual)

October 22, 2024

Last Update Submitted That Met QC Criteria

October 19, 2024

Last Verified

October 1, 2024

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 0000187

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

we will make our data available to any investigator/reviewer on their own request, so that the personal privacy of our patients cannot be compromised

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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