Cochran-Armitage Test of Trend

The Cochran-Armitage test of trend (Cochran, 1954; Armitage, 1955) goes by a number of different names, including the Cochran-Armitage trend test, Cochran-Armitage trend test for association, Cochran-Armitage test for trend in proportions or Cochran-Armitage test. The Cochran-Armitage test of trend is used to determine whether there is a linear trend (i.e., a linear relationship/association) between an ordinal independent variable and a dichotomous dependent variable. Stated another way, the Cochran-Armitage test of trend determines whether there is a linear trend in binomial proportions across the levels of an independent ordinal variable.

 
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