Table 2.

General characteristics of the study samples

	Normal-weight group	Overweight group	Obese group
Number	607	718	705
Female (%)	323(53.2)	268(37.3)	221(31.3)
Age	12.55 ± 3.04	13.26 ± 2.36	12.85 ± 2.59
Height(cm)	156.20 ± 15.86	161.96 ± 12.97	162.74 ± 13.81
Weight(kg)	47.09 ± 13.52	63.65 ± 13.61	76.11 ± 19.96
BMI (kg/m2)	18.77 ± 2.50	23.86 ± 2.20	28.12 ± 3.94
BMI-SDS	0.003 ± 0.71	1.57 ± 0.27	2.49 ± 0.48

Data are expressed as mean ± standard deviation, if not indicated otherwise. BMI body mass index, SDS Standard deviation score