Table 3. Frequency of recurrent pregnancy complications in women with previous history compared with incident rate in second pregnancy in women with no previous history.
| Complication | Recurrent complication rate (previous history) | Incident complication rate in second pregnancy (no previous history) | P value* |
|---|---|---|---|
| Pre-eclampsia | 183 of 1398 (13.1%) | 306 of 23122 (1.3%) | <0.001 |
| Gestational hypertension | 839 of 4797 (17.5%) | 1042 of 19723 (5.3%) | <0.001 |
| Induced labour | 2096 of 7446 (28.1%) | 2672 of 17074 (15.6%) | <0.001 |
| Elective cesarean | 420 of 905 (46.4%) | 2468 of 23615 (10.4%) | <0.001 |
| Emergency cesarean | 954 of 4009 (23.8%) | 967 of 20511 (4.7%) | <0.001 |
| Instrumental delivery | 663 of 6883 (9.6%) | 1083 of 17637 (6.1%) | <0.001 |
| Spontaneous preterm | 449 of 1900 (23.6%) | 1267 of 22620 (5.6%) | <0.001 |
| Antepartum hemorrhage | 414 of 2526 (16.4%) | 1670 of 21994 (7.6%) | <0.001 |
| SGA, <10th C | 706 of 2496 (28.3%) | 1368 of 22024 (6.2%) | <0.001 |
| LGA, >90th C | 813 of 2230 (36.4%) | 1583 of 22290 (7.1%) | <0.001 |
| Placental Wt. <10thC | 365 of 2069 (17.6%) | 1325 of 22451 (5.9%) | <0.001 |
| Placental Wt. >90thC | 917 of 3083 (29.7%) | 2136 of 21437 (10.0%) | <0.001 |
* P values obtained from Chi-squared test of counts