Thank you for your response! I appreciate your time and insight. I chose to use proc glimmix (and the linked paper) based on my data having nested hierarchies, repeated measures, clustering, clinic-wide and organization-wide pre-, post-, and intervention effects, and the intervention being phased across clinics. It wasn't designed as a true experimental study but as a quasi-experimental study. I'm hesitant to start the entire analysis over with a new procedure, but I'll definitely look into proc causalmed and see if it would be a better fit! Thank you again! Sincerely, Brittany
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