The Institute of Medicine Report on the Computer-based Patient Record (1997) has buried within it a comprehensive list of features that you might use as a basis for comparison of EMRs.
http://books.nap.edu/books/0309055326/html/index.html
A medical informatics group in Portland produced this list of "questions to ask" when selecting an EMR.
http://medir.ohsu.edu/~loganju/CPR.html
> 5. Which criteria to compare them on?
Good luck!
Gary Kantor, MD
University Hospitals of Cleveland
