Abstract:

Abstract:Objective To reveal the geographical distribution regularity of normal reference value of infant boys’red blood cell count in China,and provide scientific basis for making its unified standards. Methods A research is made about relationship between the normal reference value of 3 480 examples of Chinese healthy infant boys’red blood cell count and eight geographical factors in 25 areas in China; the normal reference value was determined by the microscopical counting method.Results The correlation of geographical factors and the normal reference value of Chinese infant boys’red blood cell count are quite significant (F=34.73,P=0.000).Applying the method of mathematical regression analysis,one regression equation was inferred:Y=－36.06＋0.002420X₁－0.01509X₂＋0.9126X₃＋0.3107X₅＋0.1022X₆＋0.008929X₇＋1.085X₈±0.42.Conclusion If geographical values are obtained in some areas,the normal reference value of Chinese infant boys’ red blood cell count of this area can be reckoned using the regression equation.Furthermore,according to the similarity of the normal reference value of Chinese infant boys’ red blood cell count,China can be divided into eight regions.

Key words: red blood cell count, normal reference value, geographical elements, regression analysis