Table 1 Concordance analysis of the foetal sex detected by cffDNA and the traditional prenatal approaches
From: Three-hour analysis of non-invasive foetal sex determination: application of Plexor chemistry
Gestational week (wa) of blood sampling | cffDNAb | CVSc | Amniocentesis | Concordance (%) |
|---|---|---|---|---|
(Foetal sex) | (Foetal sex) | (Foetal sex) | ||
12 | 44 | 32 | 12 | 100 |
(Md = 24; Fe = 20) | (M = 17; F = 15) | (M = 7; F = 5) | ||
13 | 44 | 20 | 24 | 100 |
(M = 22; F = 22) | (M = 8; F = 12) | (M = 14; F = 10) | ||
14 | 44 | 9 | 35 | 100 |
(M = 24; F = 20) | (M = 5; F = 4) | (M = 19; F = 16) |