If you already have a fitted model, then you can use the INMODEL= option to specify a SAS data set that contains the model parameters. You can use the SCORE suboption to score new subjects without refitting the model.
You can also use the INMODEL= option to provide initial values for parameter estimates when fitting a model.
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.