Table 4.
Results of binary logistic regression analyses on ever been pregnant (dependent variable) with socio-demographics and risk behaviours (independent variables) from adolescent girls who ever had sex (N = 5060)
| Have you ever been pregnant | |||
|---|---|---|---|
| Variables | N | OR | 95 % CI |
| Demographic characteristics | |||
| Race | |||
| Black African (Reference) | 3261 | ||
| Coloured | 408 | 1.047 | 0.762–1.439 |
| Indian | 30 | 0.649 | 0.219–1.917 |
| White* | 201 | 0.374 | 0.203–0.691 |
| Other | 30 | 1.676 | 0.738–3.810 |
| Age (in years) | |||
| ≤ 13 (Reference) | 58 | ||
| 14 | 130 | 0.891 | 0.416–1.909 |
| 15 | 258 | 0.748 | 0.371–1.507 |
| 16 | 352 | 0.675 | 0.340–1.341 |
| 17 | 361 | 0.619 | 0.311–1.232 |
| ≥ 18 | 2771 | 0.724 | 0.384–1.367 |
| Socio-economic status | |||
| Does your father have a paying job | |||
| Yes, works 5 or more days a week (Reference) | 1383 | ||
| Yes, works less than 5 days a week | 292 | 0.907 | 0.641–1.283 |
| No, he gets a social grant | 479 | 1.019 | 0.768–1.352 |
| No, he is unemployed* | 354 | 1.430 | 1.061–1.928 |
| No, he is ill or disabled | 113 | 1.483 | 0.922–2.384 |
| No, he has retired | 423 | 0.807 | 0.594–1.097 |
| My father is deceased* | 498 | 1.451 | 1.112–1.893 |
| I don’t know | 388 | 1.119 | 0.814–1.537 |
| Does your mom have a paying job | |||
| Yes, works 5 or more days a week (Reference) | 1200 | ||
| Yes, works less than 5 days a week | 443 | 1.007 | 0.747–1.358 |
| No, she gets a social grant | 690 | 1.195 | 0.929–1.537 |
| No, she is a housewife | 914 | 0.962 | 0.757–1.222 |
| No, she is ill or disabled | 82 | 1.132 | 0.641–1.999 |
| No, she has retired | 90 | 1.218 | 0.711–2.089 |
| My mother is deceased | 289 | 1.134 | 0.811–1.586 |
| I don’t know* | 222 | 1.484 | 1.018–2.163 |
| Sexual activity and related behaviours | |||
| First sex at age ≤ 13 | 267 | 1.299 | 0.812–2.078 |
| Number of sexual partners | |||
| 1 person (Reference) | 2599 | ||
| 2 or more persons* | 1331 | 1.250 | 1.039–1.503 |
| Ever use alcohol before sex* | 407 | 1.373 | 1.004–1.878 |
| Condom use | |||
| Rarely (Reference) | 1195 | ||
| Mostly* | 2735 | 0.790 | 0.649–0.962 |
| Contraceptive methods | |||
| No method (Reference) | 570 | ||
| Birth control pills | 160 | 1.004 | 0.618–1.762 |
| Condoms* | 1697 | 0.462 | 0.309–0.691 |
| Injection | 557 | 1.142 | 0.747–1.746 |
| Other* | 341 | 0.602 | 0.370–0.978 |
| Violence | |||
| Ever been hit by your boyfriend | 950 | 1.204 | 0.975–1.488 |
| Ever hit your boyfriend | 693 | 1.247 | 0.987–1.575 |
| Ever forced to have sex | 655 | 0.974 | 0.768–1.235 |
| Ever forced someone to have sex | 287 | 1.165 | 0.845–1.607 |
| Psychological well-being | |||
| Ever had serious sad and hopeless feelings | 1349 | 1.075 | 0.898–1.287 |
| Suicidal | 1086 | 0.938 | 0.808–1.196 |
| Smoking and substance use related behaviours | |||
| Smoked cigarettes* | 869 | 0.641 | 0.497–0.825 |
| Alcohol use | 2451 | 0.871 | 0.718–1.057 |
| Binge drinking* | 1331 | 0.624 | 0.503–0.774 |
| Marijuana | 466 | 1.315 | 0.970–1.782 |
| Sniffed glue, | 329 | 0.979 | 0.711–1.348 |
| Mandrax* | 135 | 1.968 | 1.243–3.117 |
| Cocaine | 123 | 1.549 | 0.935–2.566 |
| Heroin | 211 | 1.021 | 0.696–1.499 |
| Injection | 154 | 1.176 | 0.764–1.808 |
| Other | 150 | 0.839 | 0.510–1.380 |
*Bold means the variable is significant, p < 0.05