Body fat assessment in youth with overweight or obesity by an automated bioelectrical impedance analysis device, in comparison with the dual-energy x-ray absorptiometry: a cross sectional study

Table 4 Evaluation of the precision of the automated bioelectrical impedancemeter Tanita® BC-532 to assess the total body fat, compared to the dual-energy x-ray absorptiometry: residual values

	Boys (*N =* 93) TBF _DEXA (%) = [0.617 × TBF _{BIA Tanita® BC-532} (%)] + 26.24	Girls (*N =* 104) TBF _DEXA (%) = [0.648 × TBF _{BIA Tanita® BC-532} (%)] + 22.17
Residuals (%)
Mean ± SD	− 9.92 ± 6.30	−9.36 ± 5.59
Min	−24.20	− 24.00
Max	13.60	15.40
Residuals (absolute value)
Mean ± SD	10.52 ± 5.22	9.96 ± 4.40
Max	24.20	24

TBF DEXA (%): total body fat percentage assessed with dual-energy x-ray absorptiometry
TBF BIA Tanita® BC-532 (%): total body fat percentage assessed with the bioelectrical impedance analyser Tanita® BC-532
Residuals (%) = [TBF BIA _{BIA Tanita® BC-532} (%)-TBF DEXA (%)]

ISSN: 1472-6823