Association of Methylenetetrahydrofolate Reductase C677T Gene Polymorphisms with Mild Cognitive Impairment Susceptibility: A Systematic Review and Meta-Analysis

Table 4

Subgroup analysis by ethnicity associated with MTHFR C677T gene polymorphisms and MCI susceptibility.

Ethnicity		Asian	Caucasian
	T vs. C	4	4
OR		1.52	1.10
95% CI		0.81-2.84	0.84-1.44
	CT+TT vs. CC	4	4
OR		1.49	1.11
95% CI		0.75-2.97	0.82-1.50
	TT vs. CC+CT	4	4
OR		1.72	1.08
95% CI		0.86-3.43	0.47-2.46
	CT vs. CC	4	4
OR		1.00	1.06
95% CI		0.75-1.31	0.82-1.37
	TT vs. CC	4	4
OR		1.91	1.14
95% CI		0.82-4.46	0.50-2.59

: number of cases; OR: odds ratio; 95% CI: 95% confidence interval; s.e.: standard error.