中老年人室间隔厚度参考值与地理因素的岭回归分析

Ridge regression between reference value of the middle-aged and elderly people's interventricular septal thickness and geographical factors in China

目的揭示我国中老年人室间隔厚度参考值与地理因素的关系。方法收集71个市县3 996例健康中老年人室间隔厚度参考值,应用SPSS19.0软件对其与17项地理指标进行相关分析,选取相关性显著的7项地理指标进行岭回归分析,使用克里格插值法探索我国中老年人室间隔参考值的空间趋势分布。结果我国中老年人室间隔厚度参考值与其中7项地理因素具有显著的相关性。线性回归方程为:=10.91-0.016 51X1+0.000 380 0X3-0.001 090X9+0.012 66X10-0.041 00X14-0.004 100X15+0.018 30X16±1.55,并从空间趋势分布图得出我国中老年人室间隔厚度参考值的分布规律大致上从东往西逐渐升高。结论若知道中国某地区的地理要素,可通过上述模型估算该地区中老年人室间隔厚度参考值。

Objective To analyze Ridge regression between reference value of the middle-aged and elderly people's interventricular septal thickness( IVST) and geographical factors in China. Methods 3 996 examples healthy subjects were collected from 71 cities. The relationship between the reference value of middle-aged and elderly people's IVST and 17 geographical factors was studied by correlation analysis in SPSS19. 0. The ridge regression between reference value of IVST and 7 geographical factors was analyzed by SAS software. Results There were significant correlation between 7 geographical factors and reference value of IVST. The method of ride regression analysis was used to infer one regression equation:  = 10. 91-0. 016 51X1+0. 000 380 0X3-0. 001 090X9+0. 012 66X10-0. 041 00X14-0. 004 100X15+0. 018 30X16±1. 55. By observing the distribution map of reference value of middle-aged and elderly people's IVST,it displayed certain regularity. It was found that the distribution of the reference value of middle-aged and elderly people's IVST gradually increased from east to west. Conclusions The distribution of the reference value of middle-aged and elderly people's IVST is closely related with the distribution of natural conditions in China. If the related factors of one region are obtained,the reference value of middle-aged and elderly people's IVST could be computed.