Complications and Comorbidities
http://www.umanitoba.ca/.../comp_comorb.html
Charlson Index
http://www.umanitoba.ca/.../charlson_index.html
http://www.measurementexperts.org/...
Elixhauser method
http://www.hcup-us.ahrq.gov/.../comorbidity.jsp
Comparison of the Elixhauser and Charlson/Deyo Methods of Comorbidity Measurement in Administrative Data.
Medical Care. 42(4):355-360, April 2004.Southern, Danielle A , Quan, Hude MD, Ghali, William A. MD
http://www.lww-medicalcare.com/...