Examining multiple sources of differential item functioning on the Clinician & Group CAHPS® survey.
Health Serv Res. 2011 Dec;46(6pt1):1778-802. doi: 10.1111/j.1475-6773.2011.01299.x. Epub 2011 Aug 11.
Health Serv Res. 2011.
PMID: 22092021
Free PMC article.