Mr Rick Thanks a lot, for the commands, I guess I am almost close to the comparsion but not yet though. I got estimates for different years, but NOT being compared There letter B in separate columb, it seem there are non-formality implied there? Source DF Type I SS Mean Square F Value Pr > F X Year X*Year 1 118.6625502 118.6625502 493.32 <.0001 1 14.8438739 14.8438739 61.71 <.0001 1 0.3717842 0.3717842 1.55 0.2452 Source DF Type III SS Mean Square F Value Pr > F X Year X*Year 1 108.3875717 108.3875717 450.60 <.0001 1 3.4568736 3.4568736 14.37 0.0043 1 0.3717842 0.3717842 1.55 0.2452 Parameter Estimate Standard Error t Value Pr > |t| Intercept X Year 1YR Year 2YR X*Year 1YR X*Year 2YR 2.980191458 B 0.57828994 5.15 0.0006 0.735567010 B 0.04979763 14.77 <.0001 -3.122248485 B 0.82360741 -3.79 0.0043 0.000000000 B . . . 0.091520566 B 0.07361525 1.24 0.2452 0.000000000 B . . . looking at a similar question, I found the following commands but not working as it is: what do you think ? ROC REG; Model Y = X test b=the slope of model A ; run;
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