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dates.since.started.college (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 (dates_since_started_college)
 All RsFemaleMale
Mean (Std. Dev.) 5.16 (5.88) 4.73 (5.37) 6.20 (6.83)
0 785 23.38% 572 24.39% 211 21.00%
1 250 7.45% 185 7.89% 65 6.47%
2 354 10.55% 250 10.66% 104 10.35%
3 352 10.49% 256 10.92% 94 9.35%
4 260 7.75% 180 7.68% 79 7.86%
5 287 8.55% 213 9.08% 72 7.16%
6 136 4.05% 100 4.26% 36 3.58%
7 146 4.35% 98 4.18% 48 4.78%
8 105 3.13% 75 3.20% 30 2.99%
9 54 1.61% 38 1.62% 16 1.59%
10 117 3.49% 77 3.28% 40 3.98%
11 52 1.55% 34 1.45% 18 1.79%
12 65 1.94% 37 1.58% 28 2.79%
13 36 1.07% 24 1.02% 12 1.19%
14 31 0.92% 19 0.81% 12 1.19%
15 108 3.22% 68 2.90% 40 3.98%
16 23 0.69% 15 0.64% 8 0.80%
17 32 0.95% 22 0.94% 10 1.00%
18 20 0.60% 14 0.60% 6 0.60%
19 12 0.36% 5 0.21% 7 0.70%
20 42 1.25% 22 0.94% 20 1.99%
21 13 0.39% 8 0.34% 5 0.50%
22 15 0.45% 4 0.17% 11 1.09%
23 11 0.33% 8 0.34% 3 0.30%
24 0 0.00% 0 0.00% 0 0.00%
25 18 0.54% 8 0.34% 10 1.00%
26 1 0.03% 0 0.00% 1 0.10%
27 0 0.00% 0 0.00% 0 0.00%
28 0 0.00% 0 0.00% 0 0.00%
29 0 0.00% 0 0.00% 0 0.00%
30 32 0.95% 13 0.55% 19 1.89%
Missing 0
(0.00%)
0
(0.00%)
0
(0.00%)
Total 3357 100% 2345 100% 1005 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.