First intercourse: | | | | | |
In love | 154/174 | 88.5 | 456/524 | 87.0 | 0.693 |
Steady partner | 127/175 | 72.6 | 408/521 | 78.3 | 0.122 |
Partner >3 years older | 47/177 | 26.6 | 101/525 | 19.2 | 0.043 |
Casual partner | 24/175 | 13.7 | 64/521 | 12.3 | 0.693 |
Single event | 115/172 | 66.9 | 368/492 | 74.8 | 0.047 |
No alcohol | 143/178 | 80.3 | 405/531 | 76.3 | 0.301 |
Wonderful experience | 47/178 | 26.4 | 163/534 | 30.5 | 0.343 |
Contraception | 105/176 | 59.7 | 367/520 | 69.4 | 0.007 |
Condom use | 79/178 | 44.4 | 291/534 | 54.5 | 0.024 |
Lifetime no of partners: | | | | | |
5–10 | 49/176 | 27.8 | 31/521 | 5.9 | <0.001 |
>10 | 18/176 | 10.2 | 7/521 | 1.3 | <0.001 |
First date intercourse: | | | | | |
>twice | 40/177 | 22.6 | 42/519 | 8.0 | <0.001 |
Sex abroad | 36/175 | 20.6 | 47/517 | 9.1 | <0.001 |
Contraception at most recent intercourse | 139/171 | 81.3 | 412/506 | 81.4 | 0.968 |
Oral contraception | 83/178 | 46.6 | 211/534 | 39.5 | 0.114 |
Condoms | 40/178 | 22.5 | 156/534 | 29.2 | 0.099 |
Alcohol regularly when sex | 16/178 | 9.0 | 39/531 | 7.3 | 0.517 |
Oral sex: receiving/giving | 167/178 | 93.8 | 438/528 | 83.0 | <0.001 |
| 152/178 | 85.4 | 370/528 | 70.1 | <0.001 |
Anal sex | 34/178 | 19.1 | 43/525 | 8.2 | <0.001 |
STD | 27/178 | 15.2 | 29/534 | 5.4 | <0.001 |
Pregnancy | 24/176 | 13.7 | 31/518 | 6.0 | <0.001 |