THỰC TRẠNG THIẾU VITAMIN D VÀ MỘT SỐ YẾU TỐ LIÊN QUAN Ở TRẺ 6- 15 TUỔI ĐẾN KHÁM TẠI PHÒNG KHÁM NHI, BỆNH VIỆN ĐA KHOA QUỐC TẾ VINMEC TIMES CITY NĂM 2023-2024

Abstract

Aims: To determine the prevalence of vitamin D deficiency among children aged 6–15 years attending the Pediatric Clinic of Vinmec Times City International Hospital, and to examine its associations with age, sex, and nutritional status.

Methods: A retrospective study was conducted using medical records of 404 children aged 6–15 years who visited the clinic between January 2023 and December 2024. Data collected included age, sex, serum 25(OH)D concentration, and body mass index (BMI). Vitamin D deficiency was defined as 25(OH)D < 20 ng/mL.

Results: The prevalence of vitamin D deficiency was 33.7%, and 82% of children had suboptimal vitamin D levels (30 ng/mL). Vitamin D deficiency was significantly more frequent in girls than in boys (OR= 2.43, p <0.05) and increased with age (highest in the 13–15-year group). Overweight and obese children had a significantly higher prevalence of vitamin D deficiency than those with normal BMI (OR= 1.85, p < 0.05). Serum vitamin D levels showed a negative correlation with both BMI and age (p < 0.05).

Conclusion: Vitamin D deficiency is a common public health issue. It is essential to promote adequate sunlight exposure, physical activity, and vitamin D supplementation, particularly among older, girls, and overweight children.