A Four-Year Trend in Serum 25-Hydroxyvitamin D Levels in Western Connecticut

This study describes the trends in blood vitamin D levels in a regional population from 2009-2012 through a cross-sectional study design. Over a four-year period (2009-2012), serum levels of 25-hydroxyvitamin D [25(OH)D] have been measured using an automated enzyme immunoassay with a steadily increa...

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Bibliographic Details
Published inConnecticut medicine Vol. 80; no. 3; p. 133
Main Authors Belsky, Joseph, Sena, Salvador, Baqai, Saad, Dilello, Lauren C, Petrini, Joann R
Format Journal Article
LanguageEnglish
Published United States 01.03.2016
Subjects
Adult
Age Factors
Aged
Connecticut - epidemiology
Cross-Sectional Studies
Female
Health Surveys
Humans
Male
Middle Aged
Reference Values
Vitamin D - analogs & derivatives
Vitamin D - blood
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Summary:This study describes the trends in blood vitamin D levels in a regional population from 2009-2012 through a cross-sectional study design. Over a four-year period (2009-2012), serum levels of 25-hydroxyvitamin D [25(OH)D] have been measured using an automated enzyme immunoassay with a steadily increasing number of tests performed each year. A total of 54700 tests were performed during this period, with a 90% increase in annual tests ordered. Mean and median serum levels of 25(OH) D showed statistically significant increases during this period. Those with 25(OH)D levels below 10 ng/mL represented 1.45% of the subjects in 2009 and 0.3% in 2012. The decrease in the proportion of subjects with 25(OH)D levels below 20 ng/mL and below 30 ng/mL was greatest out of all the proportioned subjects. Mean and median 25(OH)D levels increased with age in males and females. These results likely reflect increased health awareness in Western Connecticut compared with national surveys showing a temporal decrease in 25(OH)D levels.
ISSN:0010-6178