PL
W pracy opisano wyniki statystycznych obliczeń porównujących oznaczanie wapnia i fosforu dwoma sposobami: metodą laboratoryjną (x) i metodą obliczeń teoretycznych (y). Oba składniki badano w całodziennych racjach pokarmowych dzieci do 1 roku życia. Wykazano, że pomiędzy wynikami uzyskanymi tymi metodami istnieje dość dobry stopień korelacji, choć wartości średnie obu metod różnią się istotnie.
EN
The results of two methods for the estimation of calcium and phosphorus in daily rations of children aged up to 1 year were compared by ample statistical tests. Ca and P contents were determined by the analytical method; moreover, the theoretical Ca and P contents were calculated from the bills of fare menus and food coposition tables. The analytical procedure was accepted as reference method. Ca and P contents determined by the analytical method accounted, on the average, for ca. 90% of those obtained by the calculation method. The coefficients of correlation between the results obtained by both methods (x and y) amounted to: rCa=0.456 and rp=0,786. There were significant differences between Ca and P contents obtained by both methods at significance level α=0.05.