The SANDWICH Procedure
Syntax: SANDWICH Procedure
The following statements are available in the SANDWICH procedure:
PROC SANDWICH <options>;
BY variables;
CLASS variable <(options)>…<variable <(options)>> </ global-options>;
CLUSTER variables;
DISPLAY <table-list> </ options>;
DISPLAYOUT table-spec-list </ options>;
FREQ variable;
MODEL dependent = <effects> </ model-options>;
WEIGHT variable;
The PROC SANDWICH and MODEL statements are required.
If your model contains classification effects, the classification variables must be listed in the CLASS statement.
The following section describes the PROC SANDWICH statement and then describes the other statements in alphabetical order.