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 6236 30.98% 4232 30.20% 1988 32.76%

12 or younger 104 0.52% 50 0.36% 53 0.87%

13 200 0.99% 122 0.87% 78 1.29%

14 632 3.14% 468 3.34% 163 2.69%

15 1752 8.70% 1333 9.51% 419 6.91%

16 2953 14.67% 2164 15.45% 781 12.87%

17 3128 15.54% 2139 15.27% 982 16.18%

18 3211 15.95% 2160 15.42% 1042 17.17%

19 1191 5.92% 831 5.93% 356 5.87%

20 531 2.64% 378 2.70% 152 2.50%

21 169 0.84% 119 0.85% 48 0.79%

22 19 0.09% 14 0.10% 5 0.08%

23 2 0.01% 1 0.01% 1 0.02%

Missing 3
(0.01%) – 2
(0.01%) – 1
(0.02%) –

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_intercourse)
	All Rs		Female		Male
Not applicable	6236	30.98%	4232	30.20%	1988	32.76%
12 or younger	104	0.52%	50	0.36%	53	0.87%
13	200	0.99%	122	0.87%	78	1.29%
14	632	3.14%	468	3.34%	163	2.69%
15	1752	8.70%	1333	9.51%	419	6.91%
16	2953	14.67%	2164	15.45%	781	12.87%
17	3128	15.54%	2139	15.27%	982	16.18%
18	3211	15.95%	2160	15.42%	1042	17.17%
19	1191	5.92%	831	5.93%	356	5.87%
20	531	2.64%	378	2.70%	152	2.50%
21	169	0.84%	119	0.85%	48	0.79%
22	19	0.09%	14	0.10%	5	0.08%
23	2	0.01%	1	0.01%	1	0.02%
Missing	3 (0.01%)	–	2 (0.01%)	–	1 (0.02%)	–
Total	20131	100%	14013	100%	6069	100%