海拔高度是影响中国中老年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,中老年人红细胞压积参考值也在逐渐增大,相关性很显着,用逐步回归分析的方法推导出二个回归方程。依据中老年人红细胞压积参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等6个区。

In order to supply a basis for uniting the reference value standard of Chinese adults and old people’s hematocrit, a research is made about relationship between the reference value of Chinese healthy adults and old people’s hematocrit and five geographical factors, which are determined by the way of wintrobe lows. It is found that altitude is the main factor affecting the reference value of Chinese adults and old people’s hematocrit. As the altitude increases gradually, the reference value of Chinese adults and old people’s hematocrit also increases gradually, and the correlation is quite obvious. Applying the method of mathematical regression analysis, two regression equations are given. If geographical values are obtained in some areas, the reference value of Chinese adults and old people’s hematocrit of this area can be reckoned using regression equations. Furthermore, according to the similarity of the reference value of Chinese adults and old 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 six regions: Qinghai-Xizang, Southwest, Northwest, Southeast, North and Northeast regions.