Researchers from Stanford University found that the average erect penis has increased from 4.8 inches erect to 6 inches over the past 30 years, but that may not be a good thing.
Articles were excluded if they were based on a self-measurement and if they reported measurements done after major pelvic surgery. Abstracts and meeting reports were excluded from the analysis.
No
What about studies where participants were aware their penis would be measured?
Small pp dudes are less likely to respond to advertisements for such studies.
How would you even get a true representative sample, military physicals or something?
mandatory penis inspection day
For erect lengths, that's probably better.
For flaccid lengths, coroner's reports.