Vitamin D levels according to age
The lowest median 25(OH)D level was 14.6 ng/mL (min-max: 0.8-945 ng/mL) in subjects aged between 18 and 29 years. The highest median 25(OH)D level was 19.5 ng/mL (min-max: 0.3-623 ng/mL) in subjects in sixth decade 19.5 ng/mL (min-max: 0.3-623 ng/mL), and seventh decade 19.4 ng/mL (min-max: 0.3-647 ng/mL). The lowest median vitamin D levels were observed in the twenties and thirties, which was statistically significant compared with the 60-69 and 70-79 years group (p=0.001) (Table 1).
Although the highest vitamin D deficiency rates observed in 18-29 years and 30-39 years, the prevalence of vitamin D deficiency (p=0.240), and insufficiency (p=0.970) were not statistically significant among the age groups (Table 2).