Table 3 

Regression analysis results 

Urine calcium 
Calcium balance 



Analysis 
B_{1} 
pvalue for slope 
pvalue for interaction 
R^{2} 
B_{1} 
pvalue for slope 
pvalue for interaction 
R^{2} 


Low calcium intakes (B_{1}) 
0.012 
0.001 
0.19 
0.612 
0.048 
< 0.001 
0.82 
0.390 



High calcium intakes 
0.012 
0.048 



Neutral or alkaline phosphate supplement (B_{1}) 
0.008 
0.037 
< 0.001 
0.645 
0.086 
< 0.001 
< 0.001 
0.457 
Acidic phosphate supplement 
0.070 
< 0.001 
0.008 
0.78 



B_{1 }= slope coefficient from regression model R^{2 }= the proportion of variance explained by the regression analysis 

Fenton et al. Nutrition Journal 2009 8:41 doi:10.1186/14752891841 