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Author Larose, T.L.; Chen, Y.; Camargo, C.A.J.; Langhammer, A.; Romundstad, P.; Mai, X.-M. url  doi
  Title Factors associated with vitamin D deficiency in a Norwegian population: the HUNT Study Type Journal Article
  Year 2014 Publication Journal of Epidemiology and Community Health Abbreviated Journal J Epidemiol Community Health  
  Volume 68 Issue 2 Pages 165-170  
  Keywords Endocrinology; Epidemiology; Lifestyle  
  Abstract Vitamin D deficiency occurs worldwide. Winter season and high Body Mass Index (BMI) are associated with low levels of serum 25-hydroxyvitamin D (25(OH)D). We estimated the prevalence of vitamin D deficiency in a Norwegian adult population and examined factors associated with vitamin D deficiency. A cohort of 25, 616 adults (19-55 years) who participated in both the second and third Nord-Trondelag Health Study (HUNT 2 (1995-1997) and HUNT 3 (2006-2008)) was established in a previous study. A 10% random sample of the cohort population was recruited for serum 25(OH)D measurements (n=2584), which was used for the current cross-sectional study. Vitamin D deficiency was defined as serum 25(OH)D level <50 nmol/L. The overall prevalence of vitamin D deficiency was 40%, but varied by season (winter: 64%; summer: 20%). Winter season (adjusted prevalence ratio (PR): 3.16, 95% CI 2.42 to 4.12) and obesity (BMI >/=30.0 kg/m2) (PR: 1.74, 95% CI 1.45 to 2.10) were strongly associated with prevalent vitamin D deficiency. Current smoking also demonstrated an increased PR (1.41, 95% CI 1.21 to 1.65). Daily intake of cod liver oil (PR: 0.60, 95% CI 0.41 to 0.77), increased physical activity (PR: 0.80, 95% CI 0.68 to 0.95) and more frequent alcohol consumption (PR: 0.76, 95% CI 0.60 to 0.95) were associated with a reduced PR. The prevalence of vitamin D deficiency was high in Norwegian adults. Winter season, high BMI and current smoking were positively associated, and intake of cod liver oil, increased physical activity and more frequent alcohol consumption were inversely associated with vitamin D deficiency.  
  Address Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, , Trondheim, Norway  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 0143-005X ISBN Medium  
  Area Expedition Conference  
  Notes PMID:24197920 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 1498  
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