如何正确运用χ2检验——两种单向有序二维列联表资料线性趋势χ2检验

How to use χ2 test correctly—— χ2 tests for the data collected from the two kinds of two dimensional contingency tables with an ordinal variable in one direction

中文关键词:  二维列联表  线性趋势检验  χ²检验  SAS软件  R软件

英文关键词:Two-dimensional contingency table  Linear trend test  χ² test  SAS software  R software

中文摘要:

      本文目的是介绍两种单向有序二维列联表资料线性趋势χ²检验以及SAS与R软件实现的方法。两种单向有序二维列联表是指原因变量为R值有序变量的“R×2列联表”和结果变量为C值有序变量的“2×C列联表”，对它们进行线性趋势检验分别需要采用Cochran-Armitage’s线性趋势χ²检验和Lee’s线性趋势χ²检验。

英文摘要:

      The purpose of this paper was to introduce the linear trend χ² tests for the data of the two kinds of one-way ordinal two-dimensional contingency tables and the implementation of SAS and R software. The two one-way ordered two-dimensional contingency tables referred to the “R×2 contingency table” with R values ordinal variable as the cause variable and the “2×C contingency table”with C values ordinal variable as the outcome variable. Their linear trend tests required the use of the Cochran-Armitage’s linear trend χ² test and the Lee’s linear trend χ² test， respectively.