Chromosomally normal (n=30) | Chromosomally abnormal (n=10) | Total pregnancies (n=40) | |
---|---|---|---|
*The majority of aneuploid pregnancies were terminated before fetal echocardiography. | |||
Time of diagnosis (weeks) | |||
<18 | 6 | 3* | 9 |
20–24 | 11 | 4 | 15 |
24–40 | 4 | 2 | 6 |
Total antenatal detection rate (%) | 70 | 90 | 75 |
95% confidence interval | 51% to 85% | 56% to 100 | 59% to 87 |