Table 4 Comparation of PPV of Trisomy 21, 18, ONTD and other deformity (n ‰)
Group | n | High risk | Low risk | Sum | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trisomy 21 | Trisomy 18 | ONTD | Other deformity | Trisomy 21 | Trisomy 18 | ONTD | Other deformity | Trisomy 21 | Trisomy 18 | ONTD | Other deformity | ||
Non-AMA | 197,101 | 24(0.12‰) | 10(0.05‰) | 4(0.02‰) | 202(1.02‰) | 24(0.12‰) | 5(0.03‰) | 10(0.05‰) | 1445(7.33‰) | 48(0.24‰) | 15(0.08‰) | 14(0.07‰) | 1647(8.36‰) |
AMA | 12,739 | 20(1.57‰) | 1(0.08‰) | 0 | 54(4.24‰) | 8(0.63‰) | 0 | 1(0.08‰) | 140(10.99‰) | 28(2.20‰) | 1(0.08‰) | 1(0.08‰) | 194(15.23‰) |
Sum | 44 | 11 | 4 | 256 | 32 | 5 | 11 | 1585 | 76 | 16 | 15 | 1841 | |