age.at.first.intercourse

age.at.first.intercourse (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_intercourse)

All Rs Female Male

Not applicable 138 1.03% 58 0.61% 80 2.05%

12 or younger 92 0.69% 47 0.50% 45 1.16%

13 185 1.38% 119 1.26% 66 1.69%

14 608 4.55% 451 4.77% 156 4.01%

15 1687 12.62% 1292 13.68% 395 10.14%

16 2851 21.32% 2105 22.28% 739 18.97%

17 2995 22.40% 2059 21.80% 929 23.85%

18 3042 22.75% 2065 21.86% 968 24.85%

19 1103 8.25% 776 8.21% 324 8.32%

20 494 3.69% 349 3.69% 144 3.70%

21 160 1.20% 113 1.20% 45 1.16%

22 16 0.12% 13 0.14% 3 0.08%

23 1 0.01% 0 0.00% 1 0.03%

Missing 0
(0.00%) – 0
(0.00%) – 0
(0.00%) –

Total 13372 100% 9447 100% 3895 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_intercourse)
	All Rs		Female		Male
Not applicable	138	1.03%	58	0.61%	80	2.05%
12 or younger	92	0.69%	47	0.50%	45	1.16%
13	185	1.38%	119	1.26%	66	1.69%
14	608	4.55%	451	4.77%	156	4.01%
15	1687	12.62%	1292	13.68%	395	10.14%
16	2851	21.32%	2105	22.28%	739	18.97%
17	2995	22.40%	2059	21.80%	929	23.85%
18	3042	22.75%	2065	21.86%	968	24.85%
19	1103	8.25%	776	8.21%	324	8.32%
20	494	3.69%	349	3.69%	144	3.70%
21	160	1.20%	113	1.20%	45	1.16%
22	16	0.12%	13	0.14%	3	0.08%
23	1	0.01%	0	0.00%	1	0.03%
Missing	0 (0.00%)	–	0 (0.00%)	–	0 (0.00%)	–
Total	13372	100%	9447	100%	3895	100%