Demographics of pregnancies affected by ATM. ‘n’ represents the number of pregnancies for which the indicated data point is available. Income level of country was determined using the World Bank Atlas21
| Characteristics . | Pregnancies n (%) . |
|---|---|
| Maternal ancestry (n = 60) | |
| Filipino | 23 (38%) |
| Chinese | 11 (18%) |
| Vietnamese | 6 (10%) |
| Thai | 5 (8%) |
| Laotian | 1 (2%) |
| Mediterranean | 2 (3%) |
| Taiwanese | 1 (2%) |
| Pakistani | 1 (2%) |
| Unknown | 10 (17%) |
| Country of origin∗ (n = 60) | |
| Lower middle income | 1 (2%) |
| Upper middle income | 7 (12%) |
| High income | 52 (87%) |
| GA at prenatal diagnosis, mean in wks (range) (n = 40) | 20.3 (12.7-27.4) |
| Method of diagnosis (n = 60) | |
| Amniocentesis | 32 (53%) |
| Chorionic villus sampling | 7 (12%) |
| Percutaneous umbilical vein sampling | 4 (7%) |
| Hydrops in known carrier couple | 4 (7%) |
| Products of conception | 2 (3%) |
| Postnatal diagnosis | 11 (18%) |
| Prior pregnancy history (n = 49)∗ | |
| No prior affected | 29 (59%) |
| One prior affected | 16 (33%) |
| Two prior affected | 4 (8%) |
| Characteristics . | Pregnancies n (%) . |
|---|---|
| Maternal ancestry (n = 60) | |
| Filipino | 23 (38%) |
| Chinese | 11 (18%) |
| Vietnamese | 6 (10%) |
| Thai | 5 (8%) |
| Laotian | 1 (2%) |
| Mediterranean | 2 (3%) |
| Taiwanese | 1 (2%) |
| Pakistani | 1 (2%) |
| Unknown | 10 (17%) |
| Country of origin∗ (n = 60) | |
| Lower middle income | 1 (2%) |
| Upper middle income | 7 (12%) |
| High income | 52 (87%) |
| GA at prenatal diagnosis, mean in wks (range) (n = 40) | 20.3 (12.7-27.4) |
| Method of diagnosis (n = 60) | |
| Amniocentesis | 32 (53%) |
| Chorionic villus sampling | 7 (12%) |
| Percutaneous umbilical vein sampling | 4 (7%) |
| Hydrops in known carrier couple | 4 (7%) |
| Products of conception | 2 (3%) |
| Postnatal diagnosis | 11 (18%) |
| Prior pregnancy history (n = 49)∗ | |
| No prior affected | 29 (59%) |
| One prior affected | 16 (33%) |
| Two prior affected | 4 (8%) |
Two mothers are represented twice as they had 2 pregnancies that are in the registry.