CLASS Statement

The SURVEYREG Procedure

CLASS Statement

CLASS $\, | \,$ CLASSES variables ;

The CLASS statement specifies the classification variables to be used in the model. Typical class variables are TREATMENT, GENDER, RACE, GROUP, and REPLICATION. If you specify the CLASS statement, it must appear before the MODEL statement.

Classification variables can be either character or numeric. The procedure uses only the first 16 characters of a character variable. Class levels are determined from the formatted values of the CLASS variables. Thus, you can use formats to group values into levels. Refer to the discussion of the FORMAT procedure in the SAS Procedures Guide and to the discussions of the FORMAT statement and SAS formats in SAS Language Reference: Concepts.

You can use multiple CLASS statements to specify classification variables.

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