Table 1. Anthropometric Characteristics of a Nationally Representative Sample of Iranian Children and Adolescents: the CASPIAN-IV Study ^a.

Characteristics	Total b	Boys c	Girls c	P Value
Age, y	12.47 (3.36)	12.3 (12.1-12.6)	12.5 (12.3-12.8)	0.2
Weight, kg	42.4 (17.06)	43.07 (41.9-44.2)	41.7 (40.7-42.6)	0.06
Height, cm	146.99 (18.10)	148.1 (146.8 - 149.5)	145.7 (144.6 - 146.8)	0.005 d
Waist circumference, cm	67.02 (11.96)	67.8 (67.1 - 68.5)	66.1 (65.6 - 66.7)	< 0.001 d
Waist/height	0.46 ( 0.06)	0.46 (0.45 - 0.46)	0.45 (0.45 - 0.45)	0.03 d
BMI, kg/m²	18.85 (4.41)	18.7 (18.5 - 18.9)	18.9 (18.7 - 19.1)	0.1

^a Abbreviations: BMI; Body Mass Index, CI; Confidence Interval, SD; Standard Deviation.

^b Values are presented as Mean (SD).

^c Values are presented as (Mean, CI).

^d P value ˂ 0.05 was considered as significant.