Table 3 

Prediction equation for fatfree mass (n = 78). 

Developed equation 
CrossValidated equation 




Intercept 
Age 
H^{2}/R 
BW(kg) 
Xc (Ω) 
R^{2} 
MSE (kg) 
SQRRMSE (kg) 
Pure Error 

 2.4658 
 0.1773 
0.7374 
0.1763 
0.1198 
0.969 
3.97 
1.99 
2.96 

R^{2 }increase when this IV is added 
 
0.0038 
0.9323 
0.0281 
0.0047 
 
 
 
 
Total R^{2} for this IV and the rest 
 
0.0038 
0.9361 
0.9642 
0.9689 
 
 
 
 
R^{2 }when this IV is fit alone 
 
0.0038 
0.9149 
0.7273 
0.0256 
 
 
 
 
Partial R^{2 }adjusted for other IVs 
 
0.2920 
0.8767 
0.420 
0.1303 
 
 
 
 


Ht^{2}/R = Height^{2 }(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:10.1186/14752891618 