RESULTS	After adjustment for ethnic group and other CVD risk factors , the MTHFR C677T TT genotype was associated with significantly lower CVD mortality ( HR : 0.69 ; 95 % CI : 0.50 , 0.95 ) but had no significant effect on all-cause mortality ( HR : 0.79 ; 95 % CI : 0.59 , 1.05 ) .\