07-30-2015 08:49 AM
I'm new using the procedure IRT. I would like to draw two information curves (TIC) in the same graphe. The first curve with the original items of the test and the second one after dropping les items that provide less information. I already saw one exemple in the Guide of SAS but there isn't the code.
I would like to know if there is an option in the PROC IRT to draw both curves in the same graphe.
Thank you in advance for your help