Table 1 Demographic and sexual history characteristics by sex (n = 1372)
Characteristic | Category | Total | Men (n = 755) | Women (n = 617) | χ2 (p) or t (p) |
|---|---|---|---|---|---|
n (%) or mean ± SD | |||||
Demographic characteristics | |||||
Age | <22 years | 764 (55.7) | 373 (49.4) | 391 (63.4) | 26.84 (<0.001) |
>22 years | 608 (44.3) | 382 (50.6) | 226 (36.6) | ||
23.54 ± 3.60 | 24.04 ± 3.65 | 22.94 ± 2.62 | 32.63 (<0.001) | ||
Grade | Freshman | 176 (12.8) | 78 (10.3) | 98 (15.9) | 20.42 (<0.001) |
Sophomore | 168 (12.2) | 104 (13.8) | 64 (10.4) | ||
Junior | 186 (13.6) | 105 (13.9) | 81 (13.1) | ||
Senior | 281 (20.5) | 136 (18.0) | 145 (23.5) | ||
Graduate student | 561 (40.9) | 332 (44.0) | 229 (37.1) | ||
Major | Humanities and society | 264 (19.2) | 118 (15.6) | 146 (23.7) | 196.90 (<0.001) |
Business administration | 34 (2.5) | 21 (2.8) | 13 (2.1) | ||
Science and engineering | 531 (38.7) | 404 (53.5) | 127 (20.6) | ||
Agriculture biotechnology | 161 (11.7) | 66 (8.7) | 95 (15.4) | ||
Medicine and nursing | 113 (8.2) | 33 (4.4) | 80 (13.0) | ||
Law | 14 (1.0) | 9 (1.2) | 5 (0.8) | ||
Education | 108 (7.9) | 54 (7.2) | 54 (8.8) | ||
Veterinary medicine and pharmacy | 57 (4.2) | 27 (3.6) | 30 (4.9) | ||
Music and art | 67 (4.9) | 10 (1.3) | 57 (9.2) | ||
Free or associated major | 23 (1.7) | 13 (1.7) | 10 (1.6) | ||
Religion | No | 519 (37.8) | 264 (35.0) | 255 (41.3) | 5.84 (0.02) |
Yes | 853 (62.2) | 491 (65.0) | 362 (58.7) | ||
Smoking | Non-smoking | 1067 (77.8) | 538 (71.3) | 529 (85.7) | 44.00 (<0.001) |
Previous smoking | 176 (12.8) | 118 (15.6) | 58 (9.4) | ||
Currently smoking | 129 (9.4) | 99 (13.1) | 30 (4.9) | ||
Alcohol drinking | None | 102 (7.4) | 44 (5.8) | 58 (9.4) | 33.99 (<0.001) |
1–2/month | 746 (54.4) | 374 (49.5) | 372 (60.3) | ||
1/week | 367 (26.7) | 233 (30.9) | 134 (21.7) | ||
2–3/week | 143 (10.4) | 92 (12.2) | 51 (8.3) | ||
over | 14 (1.0) | 12 (1.6) | 2 (0.3) | ||
Sexual history characteristics | |||||
Sexual experience | Never experienced | 507 (37.0) | 248 (32.8) | 259 (42.0) | 25.78 (<0.001) |
Experienced with different partners | 200 (14.6) | 140 (18.5) | 60 (9.7) | ||
Experienced with fixed partner | 665 (48.5) | 367 (48.6) | 298 (48.3) | ||
Number of sexual partners (n = 865) | 3.48 ± 5.71 | 4.09 ± 7.04 | 2.62 ± 2.69 | 14.08 (<0.001) | |
Sexuality patterns (n = 865) | Opposite sex | 839 (97.0) | 490 (96.6) | 349 (97.5) | 17.66 (0.001) |
Same sex | 11 (1.3) | 10 (2.0) | 1 (0.3) | ||
Both | 15 (1.7) | 7 (1.4) | 8 (2.2) | ||
STI experiences (n = 865) | No | 830 (96.0) | 493 (97.2) | 337 (94.1) | 17.25 (<0.001) |
Yes | 35 (4.0) | 14 (2.8) | 21 (5.9) | ||
Previous use of emergency contraceptive pills (n = 865) | No | 682 (78.8) | 432 (85.2) | 250 (69.8) | 29.74 (<0.001) |
Yes | 183 (21.2) | 75 (14.8) | 108 (30.2) | ||
Previous condom use (n = 865) | No | 33 (3.8) | 13 (2.6) | 20 (5.6) | 5.22 (0.03) |
Yes | 832 (96.2) | 494 (97.4) | 338 (94.4) | ||
Previous use of oral contraceptive pills (n = 865) | No | 693 (80.1) | 433 (85.4) | 260 (72.6) | 21.51 (<0.001) |
Yes | 172 (19.9) | 74 (14.6) | 98 (27.4) | ||
Previous use of withdrawal method (n = 865) | No | 629 (72.7) | 372 (73.4) | 257 (71.8) | 0.27 (0.64) |
Yes | 236 (27.3) | 135 (26.6) | 101 (28.2) | ||
Previous use of rhythm method (n = 865) | No | 521 (60.2) | 320 (63.1) | 201 (56.1) | 4.26 (0.04) |
Yes | 344 (39.8) | 187 (36.9) | 157 (43.9) | ||
Previous unwanted sex (n = 865) | No | 762 (88.1) | 471 (92.9) | 291 (81.3) | 26.99 (<0.001) |
Yes | 103 (11.9) | 36 (7.1) | 67 (18.7) | ||
Previous unwanted pregnancy (n = 865) | No | 822 (95.0) | 483 (95.3) | 339 (94.7) | 0.15 (0.75) |
Yes | 43 (5.0) | 24 (4.7) | 19 (5.3) | ||
Previous abortion (n = 865) | No | 836 (96.6) | 494 (97.4) | 342 (95.5) | 2.35 (0.13) |
Yes | 29 (3.4) | 13 (2.6) | 16 (4.5) | ||