# Additional Class Variables

Use this parameter to list additional variables whose levels form distinct categories in the model.

You can then use variables to form Additional Fixed Effects below. Numerical indicator variables containing either 0s or 1s are created for each level of each variable specified here.

If you do not specify an effect here, then its numerical values are used directly in the model as in linear regression.

Note: The order in which you specify class variables determines how LSMeans and interaction effects are sorted.

### To Specify Additional Class Variables:

| 8 | Click to open the Add window (shown below) that lists each variable contained in ADSL or the domain and SUPPxx (if merged) specific to this report.

| 8 | Select the variables you want to include in the analysis and click to add those variables to the text box.

In this example, SEX was selected and added.

Caution: Specifying a very large number of class variables or using a data set with a large number of variables can prohibitively increase the time needed to run this report.