Discussion on the relation between normal value of whole blood viscosity (230s −1 ) of Chinese women and geographical factors

Abstract

In this paper, an analytical comparison is made between the normal values of 1372 determinations of whole blood viscosity (230s⁻¹) from healthy female and five geographical factors in China's 23 areas. It is found that altitude is the main factor affecting the normal values of whole blood viscosity (230s⁻¹). As altitude increases, the normal value of women whole blood viscosity also increases gradually. Applying the method of mathematical regression analysis, five formulas of univariate regression equations and a formula of multivariate regression equation are given. If geographical index values of altitude (X₁), latitude (X₂), relative humidity (X₃), annual average temperature(X₄), annual precipitation (X₅) in some place are known, the normal value of women whole blood viscosity (230s⁻¹) in this area can be assessed according to the multivariate regression equation, Ŷ = 8.49 + 0.000424X₁ - 0.0559X₂ - 0.00684X₃ + 0.0151X₄ - 0.00116X₅ ± 0.58.