Hi, I am trying to run a mixed-effects logistic regression model looking at the odds of receiving a prescription (rx). In my model, I am including physician and patient factors like age and sex, etc (X, Y, Z). However, I wanted to account for clustering by physician (physician_ID) in my dataset with a fixed effects model. I am having trouble figuring out which command/syntax is appropriate since this is not normal proc logit to account for clustering by physician_ID. Thank you!