02-24-2017 11:15 PM
I am currently evaluating using SAS as a tool for work in psychometrics (running University Edition/SAS Studio currently), and I'm really loving the ease of the SAS PROC IRT Code. I'm wondering, is there no way for users to have SAS generate item infit and outfit statistics for IRT models? I can live without some of the overall model fit indicies, but item and person infit and outfit statistics are kind of important.
I've found some work looking at the use of PROC GLIMMIX getting infit and outfit statistics for the Rasch model, but this seems 1. super convoluted and 2. super limited.
02-25-2017 01:36 AM
Did you try ITEMFIT or ITEMSTAT in the PROC IRT statement?
Im not familiar with PROC IRT but I can read the docs
Usually, checking for options on the model and proc statement are good places to start. The next is to search for papers on lexjansen.com which contains user written papers on SAS topics.
If it turns out you can't do something you can always add it to the ballotware as a suggestion for the next update.