TÌNH TRẠNG VITAMIN D Ở TRẺ EM TUỔI HỌC ĐƯỜNG NĂM 2012

Abstract

A cross-sectional study has been conducted in 388 aged 6-11 to determine the prevalence of vitamin D deficiency among primary school children in 6 provinces across Vietnam. For each individual, data concerning daily diet, socioeconomic group, and anthropometric status were obtained, and plasma concentrations of vitamin D were measured. Serum 25(OH) vitamin D was measured by HPLC method. Results: The prevalence of hypovitaminosis D status was very high, with the prevalence of vitamin D deficiency (25(OH)D <30 nmol/L) being 19.0%. The prevalence of vitamin D insufficiency (25(OH)D between 30 – 49.9 nmol/L) and marginal vitamin D deficiency (25(OH)D between 50 – 74.9 nmol/L) in primary school children were 30.2% and 77,8%, respectively. There was a positive correlation between vitamin D concentration and serum retinol in school-aged children (Pearson correlation coefficient r = 19.9; p <0.001). Low vitamin D intake children had 43% increased risk (OR = 0.57, [0,36 ; 0,91]) for vitamin D insufficiency (25(OH)D <50 nmol/L) (p<0.028). Conclusions: Vitamin D deficiency and insufficiency are common among urban and rural primary school children. The prevention of micronutrient deficiencies including vitamin D deficiency should be promoted by appropriate interventions to improve the micronutrient status for children in the future.