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Prevalence of major defects of heart and great arteries in fetuses that were chromosomally normal
| Nuchal translucency thickness | No of fetuses | No of major cardiac defects | Prevalence per 1000 fetuses |
|---|---|---|---|
| <95th centile | 27 332 | 22 | 0.8 |
| ⩾95th centile-3.4 mm | 1 507 | 8 | 5.3 |
| 3.5-4.4 mm | 208 | 6 | 28.9 |
| 4.5-5.4 mm | 66 | 6 | 90.9 |
| ⩾5.5 mm | 41 | 8 | 195.1 |
| Total | 29 154 | 50 | 1.7 |
