Table 2.

Lifetime prevalence of the use of sexual positions and gender differences in the frequency of their use among heterosexual men and women

Position	Lifetime prevalence						Z‡	Cohen's d
	Men			Women
	N	%∗	Mdn (M)†	n	%∗	Mdn (M)†
A = Face to face/male above	10,784	97.0	7 (6.35)	9,502	97.8	7 (6.39)	−1.81	.00
B = Prone rear entry	10,617	91.6	6 (5.22)	9,395	93.4	6 (5.35)	−4.24∗∗	.00
C = Standing/face to face	10,564	77.1	3 (3.09)	9,364	76.4	3 (2.98)	−4.12∗∗	.00
D = Standing	10,562	80.7	4 (4.06)	9,347	75.6	3 (3.61)	−14.83∗∗	.01
E = Face to face/female above	10,684	95.1	6 (5.65)	9,399	95.2	6 (5.55)	−5.01∗∗	.00
F = Supine/female above	10,459	76.8	3 (3.56)	9,298	77.6	3 (3.51)	−1.50	.00
G = Fellatio/standing	10,600	89.1	5 (4.8)	9,362	90.2	6 (5.03)	−8.56∗∗	.00
H = Kneeling/rear entry	10,590	93.7	6 (5.6)	9,381	95.0	6 (5.69)	−2.70∗	.00
I = Sitting/face to face	10,499	87.7	5 (4.38)	9,315	89.4	5 (4.47)	−2.78∗	.00
J = Standing/rear entry	10,445	84.9	4 (4.21)	9,242	85.1	4 (4.23)	−.43	.00
K = Cunnilingus	10,609	91.8	6 (5.47)	9,337	89.0	6 (5.08)	−15.59∗∗	.01
L = Sixty-nine	10,551	87.1	5 (4.54)	9,324	86.8	5 (4.28)	−9.92∗∗	.00
M = Fellatio/female above	10,593	92.1	6 (5.37)	9,326	89.8	6 (5.34)	−.15	.00

Missing values excluded.

∗P < .01; ∗∗P < .001.

^∗Binary value.

^†Median for “How often did you experience this position?” (1 = Never, 2 = 1 to 2 times, 3 = At most 5 times, 4 = At most 15 times, 5 = At most 30 times, 6 = At most 100 times, 7 = More frequently).

^‡Z score for Mann-Whitney U test.