Ah, thank you! Yes, that solved the problem. Sorry for not including the code at first. This was for a proc mixed with a random intercept and slope for repeated measurements of body mass measured across varying ages. The denominator degrees of freedom was the problem with "19E3" for the fixed effect of pollution. This code solved it. proc mixed data=BMI_long;
class ID;
model BMI = age pollution /solution;
random int age /type=UN subject=ID;
ods output SolutionF=parms;
run;
data parms_a;
set parms;
format DF 8.4;
run;
proc print data=parms_a;
run; This gave me 19372 for the denominator degrees of freedom. I could have done the math for this simple model, but once I add in a bunch of covariates, I didn't want to get it wrong. Thanks!
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