Variables Total n=441 Male n=284 Female n=157 p
Age(y) 12(11,13) 2 12(11,13) 12(12,13) 0.683
Body weight(kg) 53.0(45.6,65.0) 58.0±16.6 51.7±12.0 <0.001
Body height(cm) 158.5±10.23 159.7±11.3 156.3±7.3 <0.001
BMI(kg/m2) 22.0±4.7 22.5±4.9 21.1±4.2 0.002
BMI-SDS 1.0±1.2 1.0±1.3 1.0±1.2 0.620
WC(cm) 71.6(65.0,81.0) 75.7±12.0 69.3±8.8 <0.001
WC-SDS 1.1(0.2,1.7) 1.2(0.3,1.7) 0.8±1.0 0.029
25(OH)D(ng/ml) 21.9±8.1 22.4±8.1 19.0(15.5,25.2) 0.048
Physical exam time(min/w) 290(221,360) (n=435) 287(220,373) (n=279) 290(234,343) (n=156) 0.647
1Kruskal-Wallis H test or t test were used to determine differences for continuous and categorical variables between male and female. NAFLD, nonalcoholic fatty liver disease.
2Medians, interquartile ranges in parentheses (all such values).
3Mean±SD (all such values).
Table 1: The age and anthropometric indice of 441adolescents aged 9-15-year-old.