CLASS Statement

The MULTTEST Procedure

CLASS Statement

CLASS variable;

The CLASS statement is required. It declares a single variable (character or numeric) used to identify the groups for the analysis. For example, if the variable Treatment defines different levels of a treatment, then the statement is

   class Treatment;

The order of the CLASS levels used by PROC MULTTEST correspond to their formatted values; this order can be changed with the ORDER= option in the PROC MULTTEST statement. You need to be aware of this feature when using the CONTRAST statement. You should check the "Contrast Coefficients" table to verify that the appropriate order is used.

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