A Comparison Study of Portable Foot-to-Foot Bioelectrical Impedance Scale to Measure Body Fat Percentage in Asian Adults and Children
Table 3
Methodological correlations of foot-to-foot BIA against direct segmental multifrequency BIA reference method for body fat percentage in adults and children .
Adults
SEE
Total error,
Mean differences
Slope
Intercept
Standardized coefficient
All
0.926**
0.858
3.662
3.112
0.58 (−1.89, 3.43)
0.77
1.02
0.926
Gender
Men
0.916**
0.839
2.795
3.192
−1.81 (−3.09, −0.53)*
1.19
−2.52
2.499
Women
0.913**
0.833
3.309
3.117
−1.16 (−2.15, −0.17)*
0.99
1.46
2.492
BMI groups
Normal/underweight
0.916**
0.840
2.465
3.030
−0.96 (−2.17, 0.24)
1.24
4.5
2.499
Obese/overweight
0.889**
0.790
3.610
3.233
−1.76 (−2.80, −0.73)
0.89
5.51
2.433
Ethnicity
Malay
0.924**
0.854
3.265
3.208
−2.15 (−3.13, −1.17)**
0.87
1.94
0.924
Chinese
0.933**
0.870
3.409
3.204
−0.20 (−1.73, 1.34)
0.83
4.48
0.933
Indian
0.913**
0.833
3.118
2.780
−1.08 (−3.37, 1.22)
0.76
7.12
0.913
Children
SEE
Total error,
Mean differences
Slope
Intercept
Standardized coefficient
All
0.949**
0.902
4.183
4.735
6.31 (4.73, 9.11)**
0.73
6.92
0.949
Gender
Boys
0.946**
0.895
5.440
4.811
2.99 (1.20, 4.80)*
0.75
5.71
2.575
Girls
0.96**
0.921
5.268
4.603
0.91 (−1.76, 3.58)
0.71
8.48
2.612
BMI groups
Normal/underweight
0.935**
0.874
3.782
2.885
−0.99 (−2.30, 0.33)
0.82
4.51
2.547
Obese/overweight
0.825**
0.681
6.493
6.423
5.19 (2.97, 7.41)**
0.55
15.83
2.282
Ethnicity
Malay
0.936**
0.877
5.453
4.111
2.28 (0.40, 4.17)*
1.14
2.01
0.936
Chinese
0.979**
0.959
3.653
3.518
0.26 (−3.37, 3.90)
1.33
6.48
0.979
Indian
0.946**
0.894
5.699
6.322
3.10 (−0.15, 6.34)
1.45
−13.88
0.946
Mean differences are presented in mean (95% confidence interval). : correlation coefficient between BF% measured with foot-to-foot BIA and reference method; indicates how well the BF% measured with foot-to-foot BIA fits the goodness of fit line; SEE: standardized estimated errors; : total error; ; .
