Penis Size by Country: 36 Clinical Studies (1950-2023)

Name: Penis Size by Country: 36 Clinical Studies (1950-2023)
Creator: tablepage.ai
License: https://creativecommons.org/publicdomain/zero/1.0/

Meta-analysis of 36 measurements from 21 studies across 15 countries, comparing flaccid, stretched, and erect lengths by region and methodology.

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#	study_id	first_author	year	country	region	who_region	sample_size	subject_type	measurement_type	measurement_method	mean_cm	std_dev_cm	age_mean	source_pmid	notes
1	1	Kinsey	1950	USA	North America	AMRO	2,578	volunteers	stretched	self_report	15.0		19.5	NA	Self-reported; known overestimation bias
2	2	Ajmani	1985	Nigeria	Africa	AFRO	320	medical_students	flaccid	clinician_measured	8.8	1.6	20.0	NA	Young adult males
3	3	Bondil	1992	France	Europe	EURO	905	urology_patients	flaccid	clinician_measured	9.4	1.8	53.0	NA
4	3	Bondil	1992	France	Europe	EURO	905	urology_patients	stretched	clinician_measured	12.7	1.8	53.0	NA
5	4	Wessells	1996	USA	North America	AMRO	80	urology_patients	flaccid	clinician_measured	8.8	2.4	54.0	8,709,382	Reference standard study
6	4	Wessells	1996	USA	North America	AMRO	80	urology_patients	stretched	clinician_measured	12.4	1.6	54.0	8,709,382
7	4	Wessells	1996	USA	North America	AMRO	80	urology_patients	erect	pharmacological	12.9	1.4	54.0	8,709,382	Pharmacological erection (PGE1 injection)
8	5	Smith	1998	Australia	Oceania	WPRO	184	volunteers	erect	self_report	15.7	2.0		9,702,591	Self-report during condom use; likely overestimate
9	6	Bogaert	1999	USA	North America	AMRO	3,228	volunteers	flaccid	self_report	8.5		30.6	NA
10	6	Bogaert	1999	USA	North America	AMRO	3,228	volunteers	erect	self_report	15.1		30.6	NA	Large volunteer sample; self-report
11	7	Ponchietti	2001	Italy	Europe	EURO	3,300	volunteers	flaccid	clinician_measured	9.0	1.5	17.5	11,223,678	Young adult males aged 17-19
12	7	Ponchietti	2001	Italy	Europe	EURO	3,300	volunteers	stretched	clinician_measured	12.5	1.4	17.5	11,223,678
13	8	Schneider	2001	Germany	Europe	EURO	111	volunteers	flaccid	clinician_measured	8.6	1.7	18.5	11,416,836	Young adult males aged 18-19
14	8	Schneider	2001	Germany	Europe	EURO	111	volunteers	erect	clinician_measured	14.5	1.5	18.5	11,416,836
15	9	Shah	2002	UK	Europe	EURO	104	urology_patients	stretched	clinician_measured	13.0	1.4	54.0	12,230,622
16	10	Sengezer	2002	Turkey	Asia	EMRO	200	volunteers	flaccid	clinician_measured	7.3	1.1	21.2	12,304,836
17	10	Sengezer	2002	Turkey	Asia	EMRO	200	volunteers	stretched	clinician_measured	12.5	1.4	21.2	12,304,836
18	10	Sengezer	2002	Turkey	Asia	EMRO	200	volunteers	erect	spontaneous	13.0	1.4	21.2	12,304,836
19	11	Son	2003	South Korea	Asia	WPRO	123	military	flaccid	clinician_measured	7.4	1.2	21.7	12,862,415	Korean military conscripts
20	11	Son	2003	South Korea	Asia	WPRO	123	military	stretched	clinician_measured	11.7	1.3	21.7	12,862,415
21	12	Spyropoulos	2005	Greece	Europe	EURO	52	urology_patients	stretched	clinician_measured	12.2	1.5	25.9	16,422,830
22	13	Orakwe	2006	Nigeria	Africa	AFRO	115	volunteers	flaccid	clinician_measured	9.4	1.6	42.3	NA
23	14	Promodu	2007	India	Asia	SEARO	301	volunteers	flaccid	clinician_measured	8.2	1.2		17,568,760
24	14	Promodu	2007	India	Asia	SEARO	301	volunteers	stretched	clinician_measured	10.9	1.4		17,568,760
25	14	Promodu	2007	India	Asia	SEARO	93	volunteers	erect	clinician_measured	13.0	1.4		17,568,760	Erect measured on subset of 93
26	15	Herbenick	2013	USA	North America	AMRO	1,661	volunteers	erect	self_report	14.2	2.7		23,369,655	Condom-fit study; self-measured
27	16	Habous	2015	Jordan/Tunisia/Morocco	Middle East	EMRO	778	volunteers	stretched	clinician_measured	12.4	1.4		NA	First large Arab normative study
28	17	Veale	2015	Multi-country	Global	Global	15,521	mixed	flaccid	clinician_measured	9.2	1.6		25,487,360	Landmark systematic review; 20 studies
29	17	Veale	2015	Multi-country	Global	Global	15,521	mixed	stretched	clinician_measured	13.2	1.7		25,487,360
30	17	Veale	2015	Multi-country	Global	Global	15,521	mixed	erect	clinician_measured	13.1	1.7		25,487,360
31	18	Barboza	2017	Brazil	South America	AMRO	270	volunteers	stretched	clinician_measured	13.4	1.7		NA	Brazilian normative data
32	19	Suzuki	2019	Japan	Asia	WPRO	1,661	urology_patients	flaccid	clinician_measured	8.4	1.5		NA
33	20	Mauro	2021	Italy	Europe	EURO	3,521	urology_patients	stretched	clinician_measured	13.5	1.5		34,459,218	Large modern Italian cohort
34	21	Bhatt	2023	Multi-country	Global	Global	55,761	mixed	flaccid	clinician_measured	8.7	1.5		36,792,094	Pooled mean; 75 studies 1942-2021
35	21	Bhatt	2023	Multi-country	Global	Global	55,761	mixed	stretched	clinician_measured	12.9	1.5		36,792,094
36	21	Bhatt	2023	Multi-country	Global	Global	55,761	mixed	erect	clinician_measured	13.9	1.7		36,792,094	24% increase in erect length over 29 years

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