If you specify the FIXONE, FIXONETIME, FDONE, FDONETIME, or RANONE option and the OUTTRANS= option, the transformed dependent variable and independent variables are written to a SAS data set; other variables in the input data set are copied unchanged.
Suppose your data set contains the variables y, x1, x2, x3, and z2. The following statements create a SAS data set that contains the transformed data:
proc panel data=datain outtrans=dataout;
id cs ts;
model y = x1 x2 x3 / fixone;
run;
First, z2 is copied over. Then _Int, x1, x2, y, and x3 are replaced by their deviations from the cross-sectional means. Furthermore, the following new variables are created:
_MODELL_is the model’s label (if it exists).
_METHOD_is the model’s transformation type. This variable reflects the estimation method and, in the case of random effects, the variance-component method.