<35y non-smoker | Smoker | P | ≥35y non-smoker | Smoker | P | |
---|---|---|---|---|---|---|
Maternal diabetes (N/%) | 15834 (3.4) | 2471 (3.6) | <.056 | 6535 (6.0) | 715 (6.3) | <.129 |
Pregravid BMI >25 kg/m2 (N/%) | 49107 (29.4) | 8049 (35.0) | <.001 | 14483 (37.1) | 1529 (45.2) | <.001 |
Placenta previa (N/%) | 935 (0.2) | 158 (0.2) | <.162 | 457 (0.4) | 44 (0.4) | <.657 |
Late pregnancy bleeding (N/%) | 6578 (1.4) | 1141 (1.7) | <.001 | 1826 (1.7) | 250 (2.2) | <.001 |
Anemia (N/%) | 3327 (0.7) | 579 (0.8) | <.001 | 855 (0.8) | 68 (0.6) | <.037 |
Unmarried (N/%) | 156358 (34.0) | 43740(63.4) | <.001 | 30367(27.8) | 5829 (51.7) | <.001 |
Fertility treatment other than IVF (N/%) | 6233 (1.4) | 348 (0.5) | <.001 | 3264 (3.0) | 139 (1.2) | <.001 |
IVF (N/%) | 5753 (1.2) | 297 (0.4) | <.001 | 3553 (3.3) | 141 (1.3) | <.001 |
Preeclampsia (N/%) | 21954(4.8) | 2400(3.5) | <.001 | 6400(5.9) | 535(4.7) | <.001 |