Observational StudyShiPNCT05654974
Sexual Habits Affect Penis Size in Adulthood
An observational study of Observational Study, run by University Medical Center, Kazakhstan at 1 site in Kazakhstan.
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. Read more about this study
- Who is it for?
- Ages 23 to 35 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Observational Study
- What is being tested?
- measurements and questionnaire
- How many people
- 282 participants
- Where
- 1 siteKazakhstan
- Study dates
- 1 Dec 2019to 31 Jan 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 23 to 35 years
- Men only
- Healthy volunteers accepted
- Adult
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.
Who may be able to join
- 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.
Who cannot join
- 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.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: 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.
Read the 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.
- Conditions
- Observational Study
- Being tested
- measurements and questionnaire
- Keywords
- penis size, frequency of erection, masturbation, coitus, sexual abstinence, body growth
- Medical subject headings
- Masturbation, Coitus, Sexual Abstinence
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
measurements and questionnaireOther
paper-based survey administration; erect penis length and girth measurements
What is being measured
The primary outcome is the main question the study is designed to answer.
erect penis length and girth
centimeter
Measured: baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Dec 2022
- Study start1 Dec 2019
- Primary completion30 Nov 2020
- Study completion31 Jan 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Observational StudyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case crossover
- Time perspective
- Cross-sectional
- Enrolment
- 282 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Medical Center, Kazakhstan
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Kuat Oshakbayev, University Medical Center, Kazakhstan
- Investigators
- Bibazhar Dukenbayeva, Dr., Study director, ANADETO medical center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05654974
- Sponsor's protocol ID
- 0000187
- Acronym
- ShiP
- Status last verified
- Oct 2024
- First submitted
- 28 Nov 2022
- Last updated
- 22 Oct 2024
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: 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
Study at a glance
From the registry record, last updated by the sponsor on 22 Oct 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Sexual Habits in Childhood Affect Penis Size in Later Adulthood: a Cross-sectional Study
- ClinicalTrials.gov ID
- NCT05654974
- Acronym / sponsor ID
- ShiP / 0000187
- Conditions
- Observational Study
- Keywords
- penis size, frequency of erection, masturbation, coitus, sexual abstinence, body growth
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 282 participants (actual)
- Lead sponsor
- University Medical Center, KazakhstanUniversity, hospital or other
- Study start
- 1 Dec 2019 (actual)
- Primary completion
- 30 Nov 2020 (actual)
- Study completion
- 31 Jan 2021 (actual)
- First posted
- 16 Dec 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
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 design
- Observational model
- Case crossover
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 23 to 35 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
- 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.
Key inclusion criteria (5 listed)
- 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.
Key exclusion criteria (7 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| measurements and questionnairepaper-based survey administration; erect penis length and girth measurements | Other | – |
Primary outcome
erect penis length and girth
Time frame: baseline
centimeter
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Oct 2024.
- Individual participant dataSharing planned: No. 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
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Bibazhar Dukenbayeva, Dr. study director
ANADETO medical center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Observational Study, run by University Medical Center, Kazakhstan at 1 site in Kazakhstan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 22 Oct 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Kazakhstan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
erect penis length and girth (time frame: baseline). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Oct 2024.