Clinical Trial: Vitamin D Status and Its Influencing Factors in Zhejiang Province: A Multicenter Cross-Sectional Study

U.S., Oct. 9 -- ClinicalTrials.gov registry received information related to the study (NCT07866391) titled 'Vitamin D Status and Its Influencing Factors in Zhejiang Province: A Multicenter Cross-Sectional Study' on Oct. 04.

Brief Summary: Vitamin D deficiency is a global public health problem, with an estimated 1 billion people affected worldwide, and large-scale systematic data for Zhejiang Province remain scarce. This is a multicenter, retrospective cross-sectional study. The objectives are to: (1) assess the distribution of serum 25-hydroxyvitamin D [25(OH)D] levels across regions, seasons, and demographic groups in Zhejiang Province and estimate the prevalence of vitamin D deficiency (<20 ng/mL) and insufficiency (20-29 ng/mL); (2) ide...