Heterosexual intercourse before 16 | 24.7 | 27.5 | 12.9 | 18.2 |
1.15 (1.02 to 1.29)
|
1.49 (1.31 to 1.69)
|
Homosexual experience* before 1990 | 5.0 | 8.5 | 3.5 | 6.7 |
1.80 (1.46 to 2.21)
|
2.00 (1.61 to 2.48)
|
Didn't live with both parents till 16† | 16.0 | 18.8 | 19.0 | 20.0 | 1.21 (0.97 to 1.50) | 1.04 (0.86 to 1.26) |
Child before 20‡ | 3.4 | 4.1 | 13.5 | 14.1 | 1.20 (0.88 to 1.63) | 1.05 (0.91 to 1.21) |
Lived with someone before 20‡ | 11.3 | 11.6 | 28.0 | 27.8 | 1.03 (0.84 to 1.24) | 0.99 (0.88 to 1.12) |
Started menstruating before age 12 | NA | NA | 17.2 | 17.7 | NA | 1.04 (0.92 to 1.17) |
No contraception at first sex§ | 28.9 | 28.9 | 24.8 | 26.1 | 1.02 (0.90 to 1.15) | 1.08 (0.97 to 1.20) |
Partner more willing at first sex§† | 4.5 | 6.0 | 24.6 | 23.5 | 1.34 (0.91 to 1.96) | 0.94 (0.79 to 1.13) |
Recently met partner at first sex§† | 20.0 | 19.8 | 7.0 | 8.6 | 0.98 (0.78 to 1.23) | 1.23 (0.93 to 1.63) |
Did not discuss sex with parents when 14† | 67.5 | 76.9 | 56.4 | 60.4 |
1.62 (1.35 to 1.95)
|
1.19 (1.03 to 1.38)
|
Last school attended single sex | 15.9 | 17.1 | 17.8 | 18.8 | 1.13 (0.98 to 1.30) | 1.10 (0.97 to 1.24) |