Fetal karyotype | False positive, n(%) | True positive, n(%) |
---|---|---|
Trisomy 21 | 18(18.56%) | 46(47.42%) |
Trisomy 18 | 6(6.19%) | 8(8.25%) |
Trisomy 13 | 2(2.06%) | 1(1.03%) |
Sex chromosome abnormal | 8(8.25%) | 4(4.12%) |
Other chromosome abnormal | 4(4.12%) | 0(0.00) |
Total | 38(39.18%) | 59(60.82%) |