Table 2. Factors of metabolic syndrome, anthropometric indices, and insulin sensitivity index according to quartiles of serum 25(OH)D concentration.
25(OH)D, 25-hydroxyvitamin D; CI, confidence interval; SDS, standard deviation score; SBP, systolic blood pressure; DBP, diastolic blood pressure; HDL cholesterol, high density lipoprotein cholesterol; BMI, body mass index; HOMA-IR, homeostasis model assessment of insulin resistance index; QUICKI, quantitative insulin sensitivity check index.
a)P-value was analyzed using analysis of variance and trend analyses. b)P-value was analyzed using analysis of covariance and trend analyses with adjustments for sex and age.