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age (in Demographics)

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)
 All RsFemaleMale
Mean (Std. Dev.) 19.50 (1.20) 19.47 (1.20) 19.58 (1.20)
18 4828 23.98% 3551 25.34% 1264 20.83%
19 6278 31.19% 4342 30.99% 1921 31.65%
20 4356 21.64% 2937 20.96% 1409 23.22%
21 3412 16.95% 2361 16.85% 1043 17.19%
22 1257 6.24% 822 5.87% 432 7.12%
23 0 0.00% 0 0.00% 0 0.00%
24 0 0.00% 0 0.00% 0 0.00%
25 0 0.00% 0 0.00% 0 0.00%
Missing 0
(0.00%)
0
(0.00%)
0
(0.00%)
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.