Fig. 1.

Odds of obesity (BMI ≥ 95th percentile for age and sex), low HDL-cholesterol (HDLC ≤ 35 mg/dl) and insulin resistance (homeostasis model assessment of insulin resistance (HOMA-IR) score ≥ 4.39) for the vitamin D deficient group (serum 25-hydroxyvitamin D (25(OH)D) < 30 nmol/l) compared with the adequate group (25(OH)D > 50 nmol/l): children and adolescents aged 6–18 years (n 6311), National Health and Nutrition Examination Survey, 2001–2006. Results are presented as OR (•), with their 95 % CI represented by vertical bars