Serum 25-Hydroxyvitamin D Levels in Type 2 Diabetes Patients in North China: Seasonality and the Association between Vitamin D Status and Glycosylated Hemoglobin Levels

Figure 1

Percentage of vitamin D deficiency and vitamin D levels according to season and sex in T2DM. (a) The percentage of vitamin D deficiency in total population and different seasons, compared with spring, , ;compared with winter, ^###, ^##; (b) the percentage of vitamin D deficiency according to sex, ; (c) the percentage of vitamin D deficiency in different seasons and sexes. In males, compared with summer, , . In females, compared with summer, ^##, ^#;compared with autumn, ^△△<0.01, ^△<0.05; (d) male and female subjects in this study were divided into four groups according to serum 25(OH)D level testing season. In males, compared with summer, , In females, compared with summer, ^##, ^#; compared with autumn, ^△△<0.01, ^△<0.05.

(a)

(b)

(c)

(d)