| ORIGINAL ARTICLE |
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| Year : 2016 | Volume
: 1
| Issue : 3 | Page : 8-15 |
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Association of vitamin D levels with physical and sociocultural factors among selected Filipino high school students in Quezon City
Hazel V Arnaldo, Randy P Urtula, Maria Estela R Nolasco
Philippine Children’s Medical C enter (PCMC), Quezon Avenue, Quezon City, Philippines
Correspondence Address:
Hazel V Arnaldo
Philippine Children’s Medical C enter (PCMC), Quezon Avenue, Quezon City
Philippines
 Source of Support: None, Conflict of Interest: None
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Aim: To determine the vitamin D status and its association with physical and sociocultural factors among Filipino high school students in selected schools in Quezon City. Methods: A cross-sectional study of Filipino high school students was undertaken. Ninety-seven boys and girls, 11- 18 years old, attending selected private and public secondary schools in Quezon City participated in the study. Serum 25-hydroxyvitamin D levels were determined by electrochemiluminescence immunoassay. Results: The total serum 25-hydroxyvitamin D levels of the students ranged from 19.92 nmol/L to 88.63 nmol/L with a mean of 52.43 nmol/L. There was a prevalence of hypovitaminosis D (serum 25-hydroxyvitamin D levels <50nmol/L) of 41.2% with 20.6% having deficient (<37.5 nmol/L) and 20.6% insufficient (37.5 - <50 nmol/L) serum 25-hydroxyvitamin D levels. Low vitamin D intake (p=0.019), Body mass index Z-score outside the normal range of 0 to <1SD (p=0.012) and upper socioeconomic status (p=0.001) were significantly associated with hypovitaminosis D. Conclusion: Hypovitaminosis D is highly prevalent among Filipino high school students in selected schools in Quezon City despite abundance of sunlight. Low vitamin D intake, Body mass index Z-score outside the normal range of 0 to <1SD and upper socioeconomic status were significantly associated with hypovitaminosis D. Given the characteristics of the adolescent population, appropriate interventions are needed to address the problem of poor vitamin D status in schoolchildren.
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