Obstetric history comparing cases and controls
| Variable | Cases (%) | Controls (%) | p Value |
|---|---|---|---|
| †Intrauterine contraceptive device. | |||
| ‡Patient usually uses contraception but not currently as not currently sexually active. | |||
| *Pearson's χ2 test. | |||
| **Fisher's exact test. | |||
| Contraception currently used (n=1372) | |||
| Hormonal | 255/693 (36.8%) | 220/679 (32.4%) | |
| IUCD† | 26/693 (3.8%) | 18/679 (2.7%) | |
| Diaphragm/cap | 4/693 (0.6%) | 20/679 (2.9%) | |
| Condoms | 215/693 (31.0%) | 210/679 (30.9%) | <0.001* |
| Hormonal and barrier | 63/693 (9.1%) | 46/679 (6.8%) | |
| Nil | 95/693 (13.7%) | 92/679 (13.5%) | |
| Not needed‡ | 35/693 (5.1%) | 73/679 (10.8%) | |
| Been pregnant (n=1271) | 396/665 (59.5%) | 315/606 (52.0%) | 0.008** |
| Had a termination of pregnancy (n=1084) | 308/579 (53.2%) | 235/505 (46.5%) | 0.033** |
| Had a miscarriage (n=1072) | 175/575 (30.4%) | 126/497 (25.3%) | 0.066** |
| Had a live birth (n=1073) | 243/578 (42.0%) | 155/495 (31.3%) | <0.001** |