PROC MIXED for repeated measures creates different regression coefficients each time I run the m

[StatsMan]

Also, how many levels do each of your CLASS variables have? How many total observations in the data set? How many levels does the ID variable have?

[Emma_at_SAS]

Thank you StatsMan! Very good points!

I still do not have a local SAS but I am running a model with a random intercept. It is taking a long time but I will share the results when ready. 

I am also preparing the details you asked about.

One question though. What should I prepare for "How many levels does the ID variable have". Is it the sample size and how many repeated measures I have for each sample?

Thank you!