Table 2:
Obstetric outcomes stratified by fetal fraction
| Low Fetal Fraction n=157 |
Normal Fetal Fraction n=482 |
p | |
|---|---|---|---|
|
| |||
| Gestational age at delivery (weeks) | 39 ± 2 | 39 ± 2 | 0.30 |
| Mode of delivery | 0.19 | ||
| Spontaneous vaginal | 89 (57) | 311 (65) | |
| Operative vaginal | 4 (3) | 13 (3) | |
| Cesarean | 64 (41) | 158 (33) | |
| Composite outcome for placental compromise | 45 (29) | 80 (17) | <0.001 |
| Hypertensive disease of pregnancy | 32 (20) | 48 (10) | <0.001 |
| Gestational hypertension | 12 (8) | 20 (4) | 0.08 |
| Preeclampsia | 11 (7) | 14 (3) | 0.02 |
| Preeclampsia with severe features | 9 (6) | 11 (2) | 0.06 |
| HELLP syndrome | 0 (0) | 3 (1) | 1.0 |
| Intrauterine growth restriction | 4 (3) | 7 (1.5) | 0.48 |
| Abruption | 3 (2) | 18 (4) | 0.27 |
| Oligohydramnios | 10 (6) | 15 (3) | 0.07 |
| Placenta accreta | 1 (1) | 6 (1) | 1.0 |
| Postpartum hemorrhage | 10 (6) | 25 (5) | 0.57 |
| Transfusion | 2 (1) | 9 (2) | 1.0 |
| Abnormal placental pathology | 31 (20) | 83 (17) | 0.47 |