From: Relationship of body mass index to percent body fat and waist circumference among schoolchildren in Japan - the influence of gender and obesity: a population-based cross-sectional study
Fourth graders
Seventh graders
Boys
(n = 1,054)
Girls
(n = 990)
(n = 878)
(n = 828)
%BF vs. BMI
0.74
0.97
0.69
0.96
WC vs. BMI
0.94
0.90
0.88