Table 3

Prediction equation for fat-free mass (n = 78).


Developed equation
Cross-Validated equation



Intercept
Age
H2/R
BW(kg)
Xc (Ω)
R2
MSE (kg)
SQRRMSE (kg)
Pure Error

- 2.4658
- 0.1773
0.7374
0.1763
0.1198
0.969
3.97
1.99
2.96
R2 increase when this IV is added
-
0.0038
0.9323
0.0281
0.0047
-
-
-
-
Total R2 for this IV and the rest
-
0.0038
0.9361
0.9642
0.9689
-
-
-
-
R2 when this IV is fit alone
-
0.0038
0.9149
0.7273
0.0256
-
-
-
-
Partial R2 adjusted for other IVs
-
0.2920
0.8767
0.420
0.1303
-
-
-
-

Ht2/R = Height2 (cm)/resistance (Ω); BW = Body weight (kg); Xc = reactance (Ω); MSE = Mean square error, SQRMSE = Square root of MSE; IV = independent variable.

Macias et al. Nutrition Journal 2007 6:18   doi:10.1186/1475-2891-6-18