Hi, I am trying to run a proc mixed analysis for the following data: ID Score year group othervariables 1 80 0 1 1 90 1 1 1 77 2 1 2 66 0 0 2 90 3 0 2 82 6 0 . . . . . . So the years with scores are from 0 to 7 but some have scores years 0, 1,2, 3, 6 and some 0, 3, 6 etc. It varies. The dataset is fairly large and includes 17155 observations and 223 variables...I need to adjust for some variables in the model (around 7 etc). When running the unadjusted model using the following code: proc mixed data=cup.cup; class year group; model F393MSE = group year group*year; repeated year/ subject=id type=ar(1); run; I get the following error: WARNING: ODS graphics with more than 5000 points have been suppressed. Use the PLOTS(MAXPOINTS= ) option in the PROC MIXED statement to change or override the cutoff. WARNING: Stopped because of infinite likelihood. I added the PLOTS(MAXPOINTS= NONE) in the statement, but it didn't work. Surprisingly, when I added covariates in the model (around seven) the model runs. However, I do need to run the unadjusted. Also, one other question. How does one run a GLM with REML method and specify the random effects... Thank you for your help!
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