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. Author manuscript; available in PMC: 2021 Feb 15.
Published in final edited form as: Obesity (Silver Spring). 2019 Nov;27(11):1738–1749. doi: 10.1002/oby.22637

TABLE 4.

Training vs. test results

Training
Test
Outcome N R2 LCL UCL RMSE N R2 LCL UCL RMSE
Total fat mass 104 0.96 0.94 0.97 1.83 47 0.93 0.89 0.95 2.60
Total fat-free mass 104 0.98 0.97 0.98 1.83 47 0.95 0.92 0.96 2.80
Total percent fat 104 0.83 0.77 0.87 3.87 47 0.70 0.53 0.79 4.71
Fat mass index 105 0.96 0.94 0.96 0.84 47 0.90 0.84 0.93 1.10
Fat-free mass index 104 0.91 0.88 0.93 0.80 47 0.81 0.69 0.86 1.24
Visceral body fat 104 0.92 0.90 0.94 0.15 47 0.89 0.82 0.92 0.19
Trunk fat 103 0.94 0.92 0.95 1.04 48 0.92 0.87 0.95 1.51
Trunk fat-free 102 0.96 0.95 0.97 1.26 49 0.95 0.92 0.96 1.48
Arm fat 103 0.92 0.89 0.94 0.18 49 0.90 0.84 0.93 0.22
Arm fat-free 101 0.92 0.89 0.93 0.24 47 0.89 0.82 0.92 0.29
Leg fat 111 0.92 0.89 0.94 0.58 48 0.86 0.77 0.90 0.64
Leg fat-free 103 0.94 0.91 0.95 0.66 48 0.95 0.91 0.96 0.58

Participants in test group were not used to build training model. Test group validated equations derived from training group.

LCL, lower control limit; RMSE, root mean square error; UCL, upper control limit.