Hi all, I'm working on creating an ROC curve for repeated-measures data. My outcome is dichotomous (pregnant yes/no) and my single predictor is a continuous measure, total number of motile sperm (TNM) drawn between 1 and 8 times. The doctor does not give me a time variable. I've been playing around with %GLIMMROC and am able to get a curve and and an AUC; however, the doctor is asking me about a cutoff for TNM and that is where I am stumped. Side note, I also tried using PROC GLIMMIX and put the p-hats into PROC LOGISTIC and I got wildly different results - a much higher AUC than I got with %GLIMMROC, which is a little confusing to me since the macro uses GLIMMIX. Any insight would be welcome. Thank you! -M
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