| Chromosomal abnormalities (n, %) |
---|---|
Gestational age at onset | |
  ≤ 24 weeks (n = 194) | 14, 7.2% |
 25–28 weeks (n = 128) | 3, 2.3% |
 29–32 weeks (n = 146) | 2, 1.4% |
 > 32 weeks (n = 21) | 0, 0.0% |
Ultrasound findings | Â |
 Isolated FGR (n = 311) | 10, 3.2% |
 FGR with soft markers (n = 134) | 7, 5.2% |
 FGR with nonstructural abnormalities (n = 43) | 2, 4.7% |
Serological screening | |
 High risk (n = 67) | 5, 7.5% |
 Low risk (n = 149) | 3, 2.7% |