SAS Syntax - Keyword Random

Optional keyword; specify the names of the between-group factors (categorical predictors or class variables, specified via the CLASS keyword); all effects (main effects and interactions) involving random factor effects will also be treated as random effects in the analysis; note that this is slightly different from SAS where effects rather than factors are specified as fixed or random (allowing for inconsistent or even contradictory specifications of factor effects).

Applies to. GLM (SAS syntax is only available for GLM)