Table 2.
Perinatal characteristics in pregnancies conceived spontaneously (SC) or using assisted reproductive technology (ART) with fresh or frozen embryo transfer (ET)
| Characteristic | ART | ||
|---|---|---|---|
| SC (n = 70) | Frozen ET (n = 70) | Fresh ET (n = 70) | |
| Pregnancy complications | |||
| Preterm delivery | 2 (2.9) | 5 (7.1) | 2 (2.9) |
| Pre‐eclampsia | 2 (2.9) | 7 (10.0) | 2 (2.9) |
| Gestational diabetes | 4 (5.7) | 5 (7.1) | 6 (8.6) |
| Placenta previa | 0 | 1 (1.4) | 0 |
| Placental abruption | 0 | 1 (1.4) | 0 |
| Aspirin exposure from first trimester onwards | 9 (12.9) | 10 (14.3) | 4 (5.7) |
| Prenatal corticoid exposure | 1 (1.4) | 4 (5.7) | 2 (2.9) |
| Delivery data | |||
| Gestational age at birth (weeks) | 40.0 (39.0–40.4) | 39.5 (38.4–41.0) | 40.2 (39.1–41.0) |
| Birth weight (g) | 3280 (3030–3540) | 3280 (3050–3550) | 3235 (2876–3630) |
| Birth‐weight centile | 41 (19–67) | 40 (18–60) | 36 (11–64) |
| Birth weight < 10th centile | 11 (15.7) | 6 (8.6) | 12 (17.1) |
| Birth weight > 90th centile | 4 (5.7) | 5 (7.1) | 5 (7.1) |
| Induction of labor | 24 (34.3) | 40 (57.1)* | 35 (50.0)* |
| Cesarean section | 21 (30.0) | 29 (41.4) | 19 (27.1) |
| Female gender | 37 (52.9) | 28 (40.0) | 39 (55.7) |
| Neonatal outcome | |||
| Admission to neonatal intensive care unit | 9 (12.9) | 6 (8.6) | 2 (2.9) |
| Minor neonatal morbidity | 11 (15.7) | 11 (15.7) | 4 (5.7) |
| Major neonatal morbidity | 0 | 0 | 0 |
| Neonatal mortality | 0 | 0 | 0 |
Data are given as n (%) or median (interquartile range).
*
P < 0.05 vs SC.