1. In this study, we collected and weighed all foods and beverages as consumed by five children in the home during 2-day study periods; then determined calcium and phosphorus levels by chemical analysis and by calculation using the Japanese Standard Food Composition Table; Supplements to the 3rd edition (the Table).
2. Sixty-five samples were recorded in the Table and ninety-eight samples were not.
3. A good agreement was found between the calculated and the analyzed values of calcium and phosphorus in the case samples were recorded in the Table.
4. When examining foods and dishes not recorded in the Table, they are substituted by some foods recorded in the Table, which were apparently similar to consumed foods, for the calculation of calcium and phosphorus levels. This substitution caused a great discrepancy between the results by actual analysis and by calculation.