Baseline characteristics by supplement allocation (N = 2,029)^a.

SI conversion: folate - to convert to nmol/L, multiply by 2.266; vitamin B6 - to convert to ng/mL, divide by 4.046; vitamin B12 - to convert to pmol//L multiply by 0.7378. a Sample with available SF-36 quality of life data provided 2.5–5.0 y post-baseline. b Based on chi-square tests, Student t-tests, or Wilcoxon Rank Sum tests, as appropriate. c Defined as >20 g/d for women and >30 g/d for men. d EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid.