%0 Journal Article %T Severity index for rheumatoid arthritis and its association with health care costs and biologic therapy use in Turkey %A Onur Baser %A Erdem Baser %A Akif Altinbas and Abdulkadir Burkan %J Health Economics Review %D 2013 %I Springer %R 10.1186/2191-1991-3-5 %X RA severity varies throughout Turkey and is a significant determinant of health care costs and biologic therapy use. Therefore, future comparative effectiveness studies should include the severity measure in their analysis. %U http://www.healtheconomicsreview.com/content/3/1/5/abstract