Hi I recorded survival of my study animals up to 5 weeks allocated to three different treatments over a two year period in a binomial format. Now i am trying to evaluate the effect of year, genotype, sex and treatment on survival but when i run the model below, the GLIMMIX procedure does not converge, any help please: Proc glimmix data= surv; class year camp gene sex treatment; model survival = year|genotype|sex|treatment / solution ddfm=res dist=binomial link=probit; random camp; run; quit; Log output: NOTE: Some observations are not used in the analysis because of: missing fixed effects (n=1). NOTE: Did not converge. NOTE: The SAS System stopped processing this step because of errors. NOTE: PROCEDURE GLIMMIX used (Total process time): real time 3.59 seconds cpu time 3.16 seconds Any who can help me please, what other fixed effects are missing?
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