中国老年前期人红细胞压积参考值与地理因素的多元回归分析

目的为制定中国老年前期人红细胞压积参考值的统一标准提供科学依据。方法收集了中国各地用温氏法测定的健康老年前期人红细胞压积参考值，并对其与地理因素的关系进行了研究。结果发现海拔高度是影响老年前期人红细胞压积参考值最主要的因素，随着海拔高度的逐渐增大，老年前期人红细胞压积参考值也逐渐增大，相关性很显著。用多元回归分析的方法推导出了二个回归方程。结论如果知道了中国某地的地理因素，就可以用回归方程估算这个地区的老年前期人红细胞压积参考值。依据老年前期人红细胞压积参考值的相似性，若以纬度为主要分区基础，并考虑到其它地理因素和人口分布的影响，把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等六个区

Multivariate Regression Analysis between Reference Value of Chinese Presenile People''s Hematocrit and Geographical Factors

Objective To supply a scientific basis for uniting standard of the reference value of Chinese presenile people's hematocrit.Method A research is made about the relationship between the reference value of Chinese healthy presenile people's hematocrit and five geographical factors,which are determined by the Wintrobe method.Results It is found that altitude is the main factor affecting the reference value of Chinese presenile proples hematocrit.As the altitude increases gradually,the reference value of Chinese presenile peoples hematocrit also increases gradually,and the correlation is quite obvious.Applying the method of multivariate regression analysis,two regression equations are given out.Conclusions If geographical factor somewhere in China are obtained,the reference value of Chinese presenile peoples hematocrit of this area can be reckoned using regression equations.Furthermore,according to the similarity of the reference value of Chinese presenile peoples hematocrit,taking the altitude as the main dividing basis and considering effects of other geographical factors and population distribution,China can be divided into such six regions as Qingzang,Southwest,Northwest,Southeast,North and Northeast regions.