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age.at.first.masturbation (in Sexual History)

At what age did you first masturbate

students (age_at_first_masturbation)
	All Rs		Female		Male
I have never masturbated	3159	19.86%	3004	27.12%	146	3.06%
10 or younger	1769	11.12%	1244	11.23%	517	10.85%
11	842	5.29%	366	3.30%	471	9.88%
12	1651	10.38%	650	5.87%	994	20.85%
13	1922	12.08%	831	7.50%	1080	22.66%
14	1524	9.58%	793	7.16%	726	15.23%
15	1305	8.20%	878	7.93%	421	8.83%
16	1202	7.55%	972	8.77%	228	4.78%
17	816	5.13%	748	6.75%	66	1.38%
18	783	4.92%	721	6.51%	55	1.15%
19	407	2.56%	383	3.46%	24	0.50%
20	246	1.55%	231	2.09%	13	0.27%
21	131	0.82%	120	1.08%	11	0.23%
22	54	0.34%	45	0.41%	9	0.19%
23 or older	99	0.62%	92	0.83%	6	0.13%
Missing	8221 (34.07%)	–	5401 (32.78%)	–	2694 (36.11%)	–
Total	24131	100%	16479	100%	7461	100%

I have never masturbated        10 or younger        11        12        13        14        15        16        17        18        19        20        21        22        23 or older

2828, 2100, 1751, 1626, 283 1124, 877, 736, 608, 150

I have never masturbated        10 or younger        11        12        13        14        15        16        17        18        19        20        21        22        23 or older

1889, 1269, 1107, 1028, 174 800, 505, 436, 369, 83

These graphs reflect only undergraduates attending 4-year colleges who are of normative age -- 18, 19, 20, 21, or 22, +/- 1, for freshman, sophomores, juniors, seniors, and later undergraduates, respectively. Solid lines represent women. Dotted lines represent men.

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