Serum 25-hydroxyvitamin D status of adolescents and adults in two seasonal subpopulations from NHANES III
Serum 25-hydroxyvitamin D status of adolescents and adults in two seasonal subpopulations from NHANES III
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DOI：
10.1016/s8756-3282(02)00692-0
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发表时间：
2002-05-01
期刊：
影响因子：
4.1
通讯作者：
Sahyoun, NR
中科院分区：
文献类型：
--
作者：
Looker, AC;Dawson-Hughes, B;Sahyoun, NR
Subclinical vitamin D deficiency may be common in certain subgroups in the U.S., but to date vitamin D data from other groups in the population have not been available. We used serum 25-hydroxyvitamin D (25-OHD) data from 18,875 individuals examined in the Third National Health and Nutrition Examination Survey (NHANES III 1988-1994) to assess the vitamin D status of selected groups of the noninstitutionalized U.S. adolescent and adult population. Serum 25-OHD levels were measured by a radioimmunoassay kit (DiaSorin, Inc., Stillwater, MN; normal range 22.5-94 nmol/L). Because physical exams are performed in mobile vans in NHANES, data could not be collected in northern latitudes during the winter; instead data were collected in northern latitudes during summer and in southern latitudes in winter. To address this season-latitude aspect of the NHANES design, we stratified the sample into two seasonal subpopulations (winter/lower latitude and summer/higher latitude) before examining vitamin D status. Less than 1% of the winter/lower latitude subpopulation had vitamin D deficiency (25-OHD
