Figure 1.
Multivariate-adjusted odds ratios for impaired fasting glucose (IFG) according to serum 25-hydroxyvitamin D level (, <37·5 nmol/l, n 553;
, 37·5 to <50 nmol/l, n 543;
, ≥50 nmol/l, n 370) among adolescents aged 10–19 years, Korea National Health and Nutrition Examination Survey (KNHANES) 2009–2010. Model 1 adjusted for age, sex, physical activity (PA) and BMI Z-score; model 2 for age, sex, PA and fat mass (g) Z-score; model 3 for age, sex, PA and fat mass (%) Z-score; and model 4 for age, sex, PA and fat mass index Z-score