Table 1.

Studies on self-perception of the existence of the G-spot

Author	Country	Year	Type of study and population	N =	Age range	Results
Davidson J et al.17	USA	1989	•Anonymous questionnaire (55% answer rate) •Membership lists of the 2 national organizations representing health and counseling professions •Heterosexual women •Six open-ended and 182 closed-form item	1245	(mean 38)	•84.3% believed that a sensitive area exists in the vagina •65.9% reported they had a more sensitive area in the vagina (55.1% in the anterior vaginal wall and 7.3% in the posterior wall)
Darling C et al.19	USA	1990	•Anonymous questionnaire (mailed) (192 open-ended and closed-form items) •Asked if they were aware of a "sensitive area located in the vagina” •Professional women (health care)	1230	22-82 (mean 38.4)	•65.9% reported having a G-spot (sensitive area) •Stimulation of that area led to orgasm in 72.6% •Overall, 40% reported ejaculating (82% if reported having a sensitive area in the vagina) •Sensitive area associated with multiple orgasms
Kratochvíl S22 *	Czech Republic	1993	•Women treated for neurotic disorders (200) and health professional/councilor (100) •Questionnaire	300	Unknown	•Anterior wall slightly more sensitive than the posterior one •One third reported effective stimulation in the depth of the vagina with cervical tapping. •Stimulation in the area corresponding to the alleged G spot was acknowledged as effective by 10%–20%
Burri AV et al.20	UK	2010	•Random exclusively heterosexual twins •Postal self-administered questionnaire (TEIQue-SF; TIPI; frequency of orgasm) •Questioned “Do you believe you have a so-called G-spot, a small area the size of a 20p coin on the front wall of your vagina that is sensitive to deep pressure?”	1804 (902 pairs of twins)	22-83	•56% reported having a G-spot •Women reporting always having an orgasm or having multiple orgasms with intercourse, or more satisfied with their relationship answered more often they had a G-spot •Older women less likely to report it •No evidence of a genetic factor •“Extraversion” and “openness to new experience” associated with reporting having a G-spot •Correlation with different factors (sexual behavior, relationship satisfaction, attitude towards sexuality) showed the assumption of the presence of a G-spot to be a pseudo-phenomenon
Wang X et al.18	China	2012	•Convenience (online) sampling of WSW •Asked if they were aware of the G-spot and if their partners deliberately tried to stimulate it	184	19-46	•65.2% reported having had their G-spot stimulated •49.2% reported bleeding after sex (vs 12.5% in those not reporting G-spot stimulation, P < .001)
Ellibeş Kaya A et al.21	Turkey	2018	•Cross sectional •Premenopausal, sexually active women >18 y •Exclusion criteria included women who desired cosmetic genital surgery •Asked participant if they “felt a coin-size sensitive area in the anterior vaginal wall at the time of finger or penis penetration or pressure” •FSFI, FGSIS	309	18-54	•51.5% believed the G spot exists •19.7% indecisive/do not know •Higher education levels correlated with reporting G spot existence •Sexual dysfunction lower in those who reported its existence •Higher mean score in the FSFI orgasm domain in women who reported the G spot exists

FSFI = Female Sexual Function Index; FGSIS = Female Genital Self- Image scale; TEIQue-SF = Trait Emotional Intelligence Questionnaire- Short Form; TIPI = Ten-Item Personality Index; WSW = Women who have sex with women; * access only to the abstract.