08-15-2008 12:17 PM
08-31-2017 01:19 PM
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);
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!