46～80岁男性左心房内径参考值与地理环境的因子分析

摘要

Objective To reveal the geographical distributing rule and supply a scientific basis for unifying the reference value standard of left atrial diameter (LAD) of Chinese 46 ～ 80 years old men in various regions of China. Methods The LAD reference values were collected from 8 226 healthy old men aged 46 ～ 80 years in 205 areas of China. The correlation between the measured LAD values and the geographical environment was analyzed by regression analysis and factor analysis; and by T-test, one best regression equation was inferred. Results The reference value of LAD was correlated with the geographical environment. The linear regression equation deduced from factor analysis was:(Y) = 28.07 -0. 000 087 72X1 -0.000 060 27X2 +0.000 844 9X3 +0.011 99X4 +0.000 129 5X5 +0.027 21X6 + 0. 495X7 ±2.88. In the above equation, (Y) was normal reference value of Chinese 46 ～80 years old men' LAD (mm), X1 was altitude (m), X2 was annual sunshine duration(h), X3 was annual average temperature (℃) ,X4 was annual mean relative humidity(％ ) ,X5 was annual precipitation amount(mm) ,X6 was annual range of air temperature( ℃ ) ,X7 was annual average wind speed (m/s) ,2. 88 was the value of residual standard deviations. The geography distribution figure of Chinese 46 ～ 80 years old men LAD reference values was exactly inserted with the method of Kriging. Conclusions If geographical environment of a particular area is obtained, LAD reference value of Chinese 46 ～ 80 years old men in this area can be calculated using this model and normal LAD reference values of Chinese 46 ～ 80 years old men anywhere in China can be obtained from geography distribution figure.%目的 通过探讨男性左心房内径与地理环境的关系,拟定46～80岁男性左心房内径参考值的标准.方法 收集了全国205个单位8 226例健康46～80岁男性左心房内径参考值资料,运用相关分析法分析左心房内径参考值与地理环境之间的相关性,多元线性回归和因子分析两种方法 分别建立模型,然后通过T检验选取最优模型,得出其与地理环境的关系.结果 左心房内径参考值与地理环境之间有很显著的相关性,用因子分析的方法 比较出一个最优的回归方程:Y=28.07-0.000 087 72X<,1>-0.000 060 27X<,2>+0.000 844 9X<,3>+0.011 99X<,4>+0.000 129 5X<,5>+0.027 21X<,6>+0.495X<,7>±2.88.Y是46～80岁男性左心房内径参考值(mm),X<,1>是海拔高度(m)、X<,2>是年日照时数(h)、X<,3>是年平均气沮(℃),X<,4>是年平均相对湿度(%)、X<,5>是年降水量(mm)、X<,6>是气温年较差(℃)、X<,7>是年平均风速(m/s),2.88是剩余标准差.并通过克里格(Kriging)插值法精确地内插出中国46～80岁男性左心房内径参考值的地理分布图.结论 如果想要获得某地的46～80岁男性左心房内径参考值,可以通过方程计算得出结果,从地理分布图也可得到中国任何地方46～80岁男性左心房内径的参考值.