GRM Syntax - Example 1: Multiple Regression

This example illustrates the specification for a simple multiple regression problem with a single dependent variable. Note that brief descriptive comments are enclosed in curly brackets. You can run this example with the example data file Exp.sta.

GSR;

{ Dependent variable (list): }

   DEPENDENT = STRESS_R;

{ Specification of grouping variables (factors); note that

   no codes (values) are specified, so the program will by default

   take all grouping codes (e.g., 'Male', 'Female') found in the

   data file. }

   GROUPS = GROUP

            GENDER;

{ Specification of continuous predictor variables (covariates) }

   COVARIATE = CORRECT1 CORRECT2 CORRECT3;

{ Here the bar operator is used to construct the full factorial

  design for the categorical predictor variables; the bar operator

  will evaluate to all main effects and interactions between the

  grouping variables. }

   DESIGN =  CORRECT1+CORRECT2+CORRECT3 +

             GROUP | GENDER;

For more examples, see GRM Syntax - Examples.