Table 3 Comparation of results of prenatal screening
Group | High risk | Low risk | Sum | ||||
|---|---|---|---|---|---|---|---|
Trisomy 21 | Trisomy 18 | ONTD | Trisomy 21 | Trisomy 18 | ONTD | ||
Non-AMA | 10,037 (5.09) | 559 (0.28) | 839 (0.43) | 187,064 (94.91) | 196,542 (99.72) | 196,262 (99.57) | 197,101 |
AMA | 2490 (19.55) | 165 (1.30) | 87 (0.68) | 10,249 (80.45) | 12,574 (98.70) | 12,652 (99.32) | 12,739 |
Sum | 12,527 (5.97) | 724 (0.35) | 926 (0.44) | 197,313 (94.03) | 209,116 (99.65) | 208,914 (99.56) | 209,840 |