The REPEATED statement specifies the correlation structure of the responses for GEE model fitting. In addition, the REPEATED statement controls the iterative fitting algorithm and specifies optional output.
Table 42.6 summarizes the options available in the REPEATED statement.
Table 42.6: REPEATED Statement Options
Option 
Description 

Specifies the convergence criterion for GEE parameter estimation 

Displays the estimated correlation matrix 

Displays the estimated working correlation matrix 

Displays the estimated covariance matrix 

Displays the estimated empirical correlation matrix 

Displays the estimated empirical covariance matrix 

Specifies initial values of the regression parameters estimation 

Specifies an initial value of the intercept 

Specifies the maximum number of iterations 

Displays the estimated modelbased correlation matrix 

Displays the estimated modelbased covariance matrix 

Displays a parameter estimates table with the modelbased standard errors 

Identifies a different subject (cluster) 

Specifies the working correlation matrix structure 

Specifies the order of measurements within subjects 
You must specify the SUBJECT= option:
You can also specify the following options after a slash (/) to control how the model is fit and what output is produced: