Table 1 Demographic characteristics and phenotypic features.
A (Isolated NT) | B (NT + Anomalies) | C (Isolated CH) | D (CH + Anomalies) | |
|---|---|---|---|---|
Cases | 157 | 17 | 33 | 8 |
Median maternal age - yr | 32.3 ± 5.3 | 32.6 ± 3.7 | 31.8 ± 4.7 | 32.9 ± 5.1 |
CRL-mm | 60.2 ± 3.5 | 61.1 ± 2.9 | 61.9 ± 3.1 | 60.8 ± 3.4 |
Nulliparous-no.(%) | 146 | 11 | 29 | 7 |
Use of assisted reproductive technology - no. | 7 | 1 | 0 | 1 |
Previous pregnancy with inceased in NT or CH | 2 | 1 | 1 | 1 |