Index/Topics/Meta-Analysis

Meta-Analysis

A statistical analysis that combines the results of multiple studies to draw more general conclusions.

Fact-Checks

9 results
Jan 27, 2026
Most Viewed

What is the average erect penis girth worldwide?

A clinician‑measured global estimate for (circumference) centers around 11.66 cm (4.59 inches), based on large meta‑analyses and systematic reviews that prioritized measurements taken by health profes...

Jan 17, 2026
Most Viewed

What are the largest clinician‑measured meta‑analyses of human penis size and their main findings?

Three large clinician‑measured meta‑analyses now provide the best aggregated estimates of human penile dimensions: a global nomogram/meta‑analysis of up to 15,521 men that produced clinical reference ...

Jan 17, 2026
Most Viewed

Is a 6.7 length x 5.25 inch girth penis above average in the U.S.

A penis measuring 6.7 inches in erect length and 5.25 inches in girth is larger than the averages reported in scientific measurement studies: typical erect length is about 5.1–5.5 inches and typical e...

Jan 14, 2026

What scientific studies define average penile size and their methods?

Major scientific efforts to define “average” penile size rely on cross-sectional measurements—erect, flaccid stretched, and flaccid—taken either by clinicians or self-reported; studies that used clini...

Jan 13, 2026

How is penile length accurately measured for clinical diagnosis of macropenis?

Accurate clinical measurement for diagnosing macropenis relies on standardized stretched penile length (SPL) taken from the pubic bone to the distal tip of the glans with attention to technique, obser...

Feb 2, 2026

How were large-scale penile measurement studies conducted and what biases affect their results?

has generally pooled clinic-based and volunteer studies using varied techniques—flaccid, stretched, or erect—often measured with a ruler by clinicians or by participants, and then to produce populatio...

Jan 23, 2026

What evidence supports or challenges reported temporal increases in average erect penis length?

A large 2023 systematic review and meta‑analysis pooled data from 75 studies and roughly 55,000 men and reported in mean erect penile length — an increase of about 24% from 1992 to 2021 after adjustme...

Jan 19, 2026

How do measurement methods (self-report vs. clinical) affect reported average penis length in studies?

Clinical and self-reported measurements of penile length diverge in predictable ways: self-reports tend to be larger on average due to social desirability and perceptual bias, while clinician-measured...

Jan 12, 2026

What clinician‑measured studies exist that report median penile length and girth, and can raw data be pooled to compute medians by region?

Clinician‑measured studies of penile length and girth exist across dozens of countries and several large pooled reviews, which typically report means (with SD/SE) rather than medians; a 2025 WHO‑regio...