The following statements are available in the HPREG procedure:
PROC HPREG <options>;
BY variables;
CODE <options>;
CLASS variable <(options)> <variable <(options)>> </ global-options>;
MODEL dependent = <effects> </ model-options>;
OUTPUT <OUT=SAS-data-set><keyword <=name>>…<keyword <=name>> </ options>;
PARTITION <partition-options>;
PERFORMANCE <performance-options>;
SELECTION options;
FREQ variable;
ID variables;
WEIGHT variable;
The PROC HPREG statement and a single MODEL statement are required. All other statements are optional. The CLASS statement can appear multiple times. If a CLASS statement is specified, it must precede the MODEL statement.