Table 3

Regression analysis results

Urine calcium

Calcium balance


Analysis

B1

p-value for slope

p-value for interaction

R2

B1

p-value for slope

p-value for interaction

R2


Low calcium intakes (B1)

-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 (B1)

-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


B1 = slope coefficient from regression model

R2 = the proportion of variance explained by the regression analysis

Fenton et al. Nutrition Journal 2009 8:41   doi:10.1186/1475-2891-8-41

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