specifies the name of the SAS data set containing the input data. If you do not specify the DATA= option, the most recently
created SAS data set is used.
In addition, you can place any of the following MODEL statement options in the PROC PDLREG statement, which is equivalent
to specifying the option for every MODEL statement: ALL, COEF, CONVERGE=, CORRB, COVB, DW=, DWPROB, GINV, ITPRINT, MAXITER=,
METHOD=, NOINT, NOPRINT, and PARTIAL.
