Is it possible to fit exact Poisson regression with robust variance in SAS?
PROC GENMOD can do Exact Poisson Ression, but not sure if it is Robust Variance.
Or Check RPOC GLIMMIX .
To me, robust and exact don't belong in the same sentence, but then, what do I know ? Genmod does exact Poisson regression. Countreg (in SAS/ETS) doesn't, but gives you more options to model the variance. Check the Conway-Maxwell-Poisson distribution option.
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.
Find more tutorials on the SAS Users YouTube channel.