By Column: Everything | Demographics | Sexual History | Attitudes | Relationships | Dating | Hookups
Alphabetically: Everything | Demographics | Sexual History | Attitudes | Relationships | Dating | Hookups
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 | 977 | 25.26% | 622 | 23.65% | 352 | 28.64% | 
| 12 or younger | 22 | 0.57% | 9 | 0.34% | 13 | 1.06% | 
| 13 | 37 | 0.96% | 25 | 0.95% | 12 | 0.98% | 
| 14 | 129 | 3.34% | 97 | 3.69% | 31 | 2.52% | 
| 15 | 323 | 8.35% | 242 | 9.20% | 81 | 6.59% | 
| 16 | 561 | 14.50% | 406 | 15.44% | 153 | 12.45% | 
| 17 | 567 | 14.66% | 386 | 14.68% | 180 | 14.65% | 
| 18 | 612 | 15.82% | 392 | 14.90% | 218 | 17.74% | 
| 19 | 381 | 9.85% | 266 | 10.11% | 115 | 9.36% | 
| 20 | 229 | 5.92% | 163 | 6.20% | 66 | 5.37% | 
| 21 | 27 | 0.70% | 20 | 0.76% | 7 | 0.57% | 
| 22 | 1 | 0.03% | 1 | 0.04% | 0 | 0.00% | 
| 23 | 2 | 0.05% | 1 | 0.04% | 1 | 0.08% | 
| Missing | 
0
 (0.00%)  | 
– | 
0
 (0.00%)  | 
– | 
0
 (0.00%)  | 
– | 
| Total | 3868 | 100% | 2630 | 100% | 1229 | 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.