Sexual Habits Affect Penis Size in Adulthood

Observational Study Clinical Trial

— ShiP  

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05654974
• Other study ID #: 0000187
• Status: Completed
• Start date: December 1, 2019
• Est. completion date: January 31, 2021

Study information

• Verified date: December 2022
• Source: University Medical Center, Kazakhstan
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 282
• Est. completion date: January 31, 2021
• Est. primary completion date: November 30, 2020
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 23 Years to 35 Years

Eligibility

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.

Related Conditions & MeSH terms

• Observational Study

Intervention

Other:
• measurements and questionnaire
paper-based survey administration; erect penis length and girth measurements

Locations

Country	Name	City	State
Kazakhstan	Kuat Pernekulovich Oshakbayev	Astana

Sponsors (1)

Lead Sponsor	Collaborator
University Medical Center, Kazakhstan

Country where clinical trial is conducted

Kazakhstan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	erect penis length and girth	centimeter	baseline