Table 5. Haplotype distribution of three SNPs of MTHFR gene.

Haplotype	Patients (%)	Controls (%)	OR (95% CI)	P-value
ACC	462.58 (25.1%)	548.54 (25.9%)	0.96 (0.83–1.11)	0.576
ACT	95.85 (5.2%)	87.92 (4.1%)	1.27 (0.94–1.71)	0.115
ATT	1000.58 (54.4%)	1178.35 (55.6%)	0.95 (0.84–1.08)	0.412
CCT	264.13 (14.4%)	282.32 (13.3%)	1.09 (0.91–1.31)	0.355

All those P<0.05 will be ignored in analysis.