I have a mixed regression polynomial model:

mixed emotion time1 time2 time3 || person: || day: time1 time2 time3 , residuals(ar 1, t(ARtime))

Time is coded from -8 to 2. I want to know the linear effect at various points throughout time (e.g., -6 to 0, 0 to 2). I have tried to use lincom, but to no avail. I have appended an image to hopefully provide a better example.

Any idea how I might get the linear slope across a set of specific time points?


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