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Vitamin D Status and Analysis of Specific Correlates in Preschool Children: A Cross-Sectional Study in Southern Croatia

Author

Listed:
  • Zeljka Karin

    (Teaching Institute of Public Health of Split Dalmatian County, 21000 Split, Croatia)

  • Barbara Gilic

    (Faculty of Kinesiology, University of Split, 21000 Split, Croatia)

  • Daniela Supe Domic

    (Department of Medical Laboratory Diagnostics, University Hospital of Split, 21000 Split, Croatia)

  • Zdenko Sarac

    (School of Medicine, University of Mostar, 88000 Mostar, Bosnia and Herzegovina)

  • Katarina Ercegovic

    (Teaching Institute of Public Health of Split Dalmatian County, 21000 Split, Croatia)

  • Natasa Zenic

    (Faculty of Kinesiology, University of Split, 21000 Split, Croatia)

  • Ognjen Uljevic

    (Faculty of Kinesiology, University of Split, 21000 Split, Croatia)

  • Mia Peric

    (Faculty of Kinesiology, University of Split, 21000 Split, Croatia)

  • Josko Markic

    (Department of Pediatrics, University Hospital of Split, 21000 Split, Croatia
    School of Medicine, University of Split, 21000 Split, Croatia)

Abstract

Vitamin D deficiency is a globally important problem, particularly in children, but there is a lack of information regarding this deficiency in preschool children from southeastern Europe. This study aimed to establish the levels of 25-hydroxyvitamin D (25(OH)D) and associations of gender, time spent outdoors, physical activity (PA), and body mass index (as predictors) with the 25(OH)D level (outcome) in healthy preschool children. The participants were preschoolers (all 5–6 years of age) from southern Croatia. All the participants were tested during their mandatory medical examination 6–7 months prior to school enrollment. The PA was obtained using the preschool-age physical activity questionnaire (Pre-PAQ), which categorizes PA into five levels (from sedentary to vigorous PA). The prevalence of 25(OH)D deficiency was high: 58% of the children had 25(OH)D levels of <50 nmol/L (deficiency), and an additional 29% had an insufficient level of 25(OH)D (50–75 nmol/L). Boys had higher levels of 25(OH)D than girls. A multinomial regression using 25(OH)D categories as the outcome and a sufficient level (>75 nmol/L) as the reference value identified gender as the only significant predictor of 25(OH)D status, with boys being at lower risk for 25(OH)D deficiency than girls. These results showed a high prevalence of 25(OH)D deficiency in preschoolers from the southern part of Croatia, which is additionally alarming based on the geographical position of the studied region (42° N) and its high number of sunshine hours (>2600 h per year). Future studies examining other potential correlates of 25(OH)D in the region are warranted.

Suggested Citation

  • Zeljka Karin & Barbara Gilic & Daniela Supe Domic & Zdenko Sarac & Katarina Ercegovic & Natasa Zenic & Ognjen Uljevic & Mia Peric & Josko Markic, 2018. "Vitamin D Status and Analysis of Specific Correlates in Preschool Children: A Cross-Sectional Study in Southern Croatia," IJERPH, MDPI, vol. 15(11), pages 1-14, November.
  • Handle: RePEc:gam:jijerp:v:15:y:2018:i:11:p:2503-:d:181521
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    References listed on IDEAS

    as
    1. Kyung-Jin Yeum & Byeng Chun Song & Nam-Seok Joo, 2016. "Impact of Geographic Location on Vitamin D Status and Bone Mineral Density," IJERPH, MDPI, vol. 13(2), pages 1-11, February.
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    3. Katarzyna Zadka & Ewelina Pałkowska-Goździk & Danuta Rosołowska-Huszcz, 2018. "The State of Knowledge about Nutrition Sources of Vitamin D, Its Role in the Human Body, and Necessity of Supplementation among Parents in Central Poland," IJERPH, MDPI, vol. 15(7), pages 1-10, July.
    4. Ilona Bidzan-Bluma & Małgorzata Lipowska, 2018. "Physical Activity and Cognitive Functioning of Children: A Systematic Review," IJERPH, MDPI, vol. 15(4), pages 1-13, April.
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