Footnote Table 3:
Predicted probability can be calculated by the following equation:
(e^-2.858+βCheese+βMilk+βYogurt)/(1+e^-2.858+βCheese+βMilk+βYogurt)
Example: someone consuming 3-7 weekly portions of cheese has a 2.240
higher odds of having an adequate calcium intake than someone consuming
no cheese. For example, a person consuming 5 weekly portions of cheese
(β=2.240), at least one portion of milk per day (β=2.887) and no
yogurt/curd (β=0) has the following predicted probability of having an
adequate calcium intake:
(e^-2.858+2.240+2.887+0)/(1+e^-2.858+2.240+2.887+0)=0.927.
Table 4. Classification table based on the Logistic
Regression Model for estimating the adequacy of calcium intake in
pregnancy.