Fetal Rhesus D Genotyping and Sex Determination from Maternal Plasma of Rhesus D-Negative Antenatal Population: The Usefulness of Conventional Polymerase Chain Reaction in Resource-limited Settings

Table 3

Analytical and diagnostic measures between prenatal RhD and sex genotyping and postnatal measures.

Genotyping	Neonatal RhD phenotype		Concordance	Cohen’s kappa	Accuracy	value
	RhD+	RhD−
Fetal genotype
RhD5			100.0%	100.0%	100.0%	<0.0001
Positive	26 (100.0)	0 (0.0)
Negative	0 (0.0)	4 (100.0)
RhD7			100.00%	100.0%	100.0%	<0.0001
Positive	26 (100.0)	0 (0.0)
Negative	0 (0.0)	4 (100.0)
RhD10			92.30%	76.2%	93.3%	0.001
Positive	24 (92.3)	0 (0.0)
Negative	2 (7.7)	4 (100.0)
Fetal gender	Neonatal gender
SRY	Male	Female	100%	100.00%	100.00%	<0.0001
Positive	9 (100.0)	0 (0.0)
Negative	0 (0.0)	21 (100.0)