Iodine Status of the U.S. Population, National Health and Nutrition Examination Survey, 2005-2006 and 2007-2008
Iodine Status of the U.S. Population, National Health and Nutrition Examination Survey, 2005-2006 and 2007-2008
复制标题
DOI:
10.1089/thy.2010.0077
复制
发表时间:
2011-04-01
期刊:
影响因子:
6.6
通讯作者:
Wang, Richard Y.
中科院分区:
文献类型:
--
作者:
Caldwell, Kathleen L.;Makhmudov, Amir;Wang, Richard Y.
Background: This report presents urinary iodine (UI) concentrations for the general U. S. population during 2005-2006 and 2007-2008. These findings are the fourth and fifth assessments of the population since National Health and Nutrition Examination Survey (NHANES) III (1988-1994), when the median UI concentration for the population decreased from NHANES I (1971-1974).Methods: During 2005-2006 and 2007-2008,similar to 5000 participants per year were selected to participate in NHANES. The participants were interviewed and examined. UI concentration was measured on a random one third sub-sample of 2649 participants, aged 6 years and older in 2005-2006, and in all participants in 2007-2008. These urine iodine concentrations are representative of the general U. S. population by age, sex, and race/ethnicity.Results: (i) The median UI concentrations for the general U. S. population in 2005-2006 and 2007-2008 were 164 mu g/L (95% confidence interval [CI] 154-174) and 164 mu g/L (95% CI 154-173), respectively. Also, the proportions of the population with a UI concentration of = 200 mu g/L appeared to be higher in children and persons >= 70 years than in other age groups. (ii) In both surveys, children aged 6-11 years had median UI concentrations of >= 200 mu g/L, and about 5% of them had a UI concentration of >50 mu g/L. (iii) All pregnant women (sample size 184) surveyed during 2005-2008 had a median UI concentration of 125 mu g/L (95% CI 86-198), and 56.9%+/- 7.9% of this group had a UI concentration of