Vitamin D, race, and risk for anemia in children.
Vitamin D, race, and risk for anemia in children.
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DOI：
10.1016/j.jpeds.2013.08.060
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发表时间：
2014-01
期刊：
影响因子：
--
通讯作者：
Fadrowski JJ
中科院分区：
文献类型：
--
作者：
Atkinson MA;Melamed ML;Kumar J;Roy CN;Miller ER 3rd;Furth SL;Fadrowski JJ
To examine the association between 25-hydroxyvitamin D (25[OH]D) deficiency and anemia in a cohort of otherwise healthy children, and to determine whether race modifies the association between 25(OH)D status and hemoglobin (Hgb). Cross-sectional study of 10,410 children and adolescents aged 1-21 years from the 2001-2006 National Health and Nutrition Examination Survey. Anemia was defined as hemoglobin less than the 5th percentile for age and sex based on NHANES III data. Lower 25(OH)D levels were associated with increased risk for anemia; < 30 ng/mL, adjusted odds ratio (OR) 1.93, 95% confidence interval (CI) 1.21, 3.08, p=0.006, and < 20 ng/mL, OR 1.47, 95%CI 1.14-1.89, p=0.004. In linear regression, small but significant increases in Hgb were noted in the upper quartiles of 25(OH)D compared with the lowest quartile (< 20 ng/mL) in the full cohort. Results of race-stratified linear regression by 25(OH)D quartile in white children were similar to those observed in the full cohort, but in black children, increase in Hgb in the upper 25(OH)D quartiles was only apparent compared with the lowest black race specific quartile (<12 ng/mL). 25(OH)D deficiency is associated with increased risk of anemia in a healthy U.S. children, but the 25(OH)D threshold levels for lower Hgb are lower in black children in comparison with white children.
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