Exploring differential item functioning in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)
Citation
Pollard , B , Johnston , M & Dixon , D 2012 , ' Exploring differential item functioning in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) ' , BMC Musculoskeletal Disorders , vol. 13 , 265 . https://doi.org/10.1186/1471-2474-13-265