Table 2.

Distribution of MTHFR 677C>T genotype and allele frequencies as a function of health status during pregnancy.

	Genotypes
Health status during pregnancy	CC		CT		TT		Allele frequency
	n	%	n	%	n	%	C	T	P∗
Unhealthy pregnancy n = 244	68	27.8	125	51.2	51	21.0	53.5	46.5	.000
Healthy pregnancy n = 3143	1282	40.8	1415	45.0	446	14.2	63.3	36.7