The column proportions test looks at the rows of a table independently and compares pairs of columns, testing whether the proportion of respondents in one column is significantly different from the proportion in the other column. The proportion is the count in the cell divided by the base for the column. For details about the types of tables that are suitable for this test and what happens when there is nesting or concatenation, see Details and restrictions of the column proportions test.

Column IDs are only applied to visible table elements. Hidden elements are not taken in consideration when defining a Column IDs as a string.