age.at.first.masturbation

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

Variable Summary	Undergrad	Freshman	Sophomore	Junior	Senior
Sexually active students:	Undergrad	Freshman	Sophomore	Junior	Senior
Casual-sexually active students:	Undergrad	Freshman	Sophomore	Junior	Senior

students (age_at_first_masturbation)

All Rs Female Male

I have never masturbated 2789 21.55% 2656 29.08% 127 3.37%

10 or younger 1338 10.34% 960 10.51% 373 9.89%

11 663 5.12% 289 3.16% 371 9.84%

12 1286 9.94% 506 5.54% 777 20.61%

13 1572 12.15% 687 7.52% 875 23.21%

14 1264 9.77% 665 7.28% 597 15.84%

15 1094 8.46% 748 8.19% 344 9.12%

16 1019 7.88% 832 9.11% 186 4.93%

17 712 5.50% 666 7.29% 45 1.19%

18 631 4.88% 590 6.46% 39 1.03%

19 324 2.50% 310 3.39% 14 0.37%

20 169 1.31% 160 1.75% 9 0.24%

21 60 0.46% 54 0.59% 6 0.16%

22 15 0.12% 9 0.10% 6 0.16%

23 or older 3 0.02% 2 0.02% 1 0.03%

Missing 7192
(35.73%) – 4879
(34.82%) – 2299
(37.88%) –

Total 20131 100% 14013 100% 6069 100%

These tables reflect only undergraduates attending 4-year colleges who are of normative age -- 18, 19, 20, 21, or 22, +/- 1, for freshman, sophomores, juniors, and seniors, respectively.

students (age_at_first_masturbation)
	All Rs		Female		Male
I have never masturbated	2789	21.55%	2656	29.08%	127	3.37%
10 or younger	1338	10.34%	960	10.51%	373	9.89%
11	663	5.12%	289	3.16%	371	9.84%
12	1286	9.94%	506	5.54%	777	20.61%
13	1572	12.15%	687	7.52%	875	23.21%
14	1264	9.77%	665	7.28%	597	15.84%
15	1094	8.46%	748	8.19%	344	9.12%
16	1019	7.88%	832	9.11%	186	4.93%
17	712	5.50%	666	7.29%	45	1.19%
18	631	4.88%	590	6.46%	39	1.03%
19	324	2.50%	310	3.39%	14	0.37%
20	169	1.31%	160	1.75%	9	0.24%
21	60	0.46%	54	0.59%	6	0.16%
22	15	0.12%	9	0.10%	6	0.16%
23 or older	3	0.02%	2	0.02%	1	0.03%
Missing	7192 (35.73%)	–	4879 (34.82%)	–	2299 (37.88%)	–
Total	20131	100%	14013	100%	6069	100%