I'm getting an error message when trying to make a referent variable, not sure if it's to do with how i've labelled the categories or an issues with the ref statement. Any help would be appreciated, thanks team. PROC FORMAT; VALUE BMIgfmt 1="Underweight/Normal" 2="Overweight" 3="Obese"; RUN; PROC GLM DATA=bpdata2 PLOTS=diagnostics; CLASS bmig (REF= 'Underweight/Normal'); MODEL DBP= age smokgp BMIg / SOLUTION CLPARM TOLERANCE; RUN; ERROR: Invalid reference value for BMIg.
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