Table 2 General descriptive statistics of demographic variables and serum vitamin D levels
Baseline Characteristics | Total number of individuals n = 26,750 (%) | Serum vitamin D levels ng/ml | Mean log serum vitamin D levels ng/mla |
|---|---|---|---|
Age in years (mean ± SD) | 38 ± 18 |  |  |
Gender | |||
 Male | 9002 (34) |  |  |
 Female | 17,748 (66) |  |  |
Vitamin D deficiency | 15,031 (56) |  < 20 |  < 1.30 |
Vitamin D insufficiency | 5325 (19) | 21 – 29.9 | 1.30 – 1.48 |
Vitamin D sufficiency | 6394 (24) |  > 30 |  > 1.48 |