B Vitamins and Plasma Homocysteine Concentrations in an Urban and Rural Area of Costa Rica
Mi Kyung Kim, PhD,
Jose M. Ordovas, PhD,
Jacob Selhub, PhD and
Hannia Campos, PhD
Department of Nutrition, Harvard School of Public Health (M.K.K., H.C.), Boston, Massachusetts
Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University (J.M.O., J.S.), Boston, Massachusetts
Hanyang University College of Medicine, Seoul, SOUTH KOREA (M.K.K.)

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Fig. 1. Mean plasma total homocysteine concentrations (and 95% confidence intervals) by quintile of plasma folate (left) and vitamin B12 (right) in women from Puriscal, Costa Rica. Means are adjusted to an age of 40 years. Asterisks indicate significant difference from the mean in the highest quintile (** p < 0.01; *** p < 0.001).
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Copyright © 2003 by the American College of Nutrition.