Index/Topics/Publication bias

Publication bias

The potential for publication bias in studies on penis length.

Fact-Checks

6 results
Jan 12, 2026
Most Viewed

What is the average flaccid vs erect penis size and how do they correlate?

A preponderance of systematic reviews and large measured studies place the average flaccid penile length around 9–9.5 cm and the average erect length around 13–14 cm, with stretched length clustering ...

Jan 13, 2026
Most Viewed

How do penis size averages vary by country and which large studies reported this?

Global averages for erect penis length cluster tightly around roughly 13–14 cm (≈5.1–5.5 in), but published country rankings show variation from under 10 cm in some datasets to ~17–18 cm at the top; t...

Jan 17, 2026
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How does penis size vary by ethnicity or region?

Large, clinician‑measured meta‑analyses place the global mean erect penis length at roughly 13 cm (≈5.1 in) and show only small differences across populations; where studies report regional or ethnic ...

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 19, 2026

6.75 inch penis

A penis measuring 6.75 inches erect is larger than the typical male erect length reported in the medical literature, falling noticeably above the commonly reported average of roughly 5.1–5.5 inches (1...

Jan 10, 2026

venezuela penile lenth sample size

Available aggregate rankings list Venezuela among the countries with higher reported average erect penile length (around 16.7–16.9 cm), but the publicly available secondary sources in this packet do n...