Anthropometric and clinical characteristic of study subjects.

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Data presented as mean ± standard deviation; †Data presented as median (interquartile range); N: Number of subjects; NW: normal weight children; OW/OB: overweight and obese children; HC: hip circumference; WC: waist circumference; WHR: waist-hip ratio; HDL-C: high density lipoprotein-cholesterol; LDL-C: low density lipoprotein-cholesterol; HOMA-IR: homeostasis model assessment of insulin resistance; TSH: thyroid stimulating hormone; FT4: free thyroxine; FT3: free tri-iodothyronine. Data for serum levels of TSH, FT3 and FT4 was available only for 1,822 subjects.