Conclusion Based on this literature review , the disease-specificHAQ and the generic SF-36 can currently be most confidently recommended to measure PF in RA for most research purpose s. The HAQ , however , was frequently associated with considerable ceiling effects while the SF-36 has limited content coverage .
Background The aim of this study was to systematic ally review the content validity and measurement properties of all physical function ( PF ) scales which are currently vali date d for use with patients with rheumatoid arthritis ( RA ) .
Cultural adaptation and validation of a German version of the Arthritis Impact Measurement Scales (AIMS2).
OBJECTIVE To vali date a translated and culturally adapted version of the Arthritis Impact Measurement Scale ( AIMS ) 2 in primary care patients with osteoarthritis ( OA ) of the hip and knee . METHOD The AIMS 2 was translated into German and culturally adapted . The question naire then was administered to 220 primary care patients with OA of the knee or hip . Two hundred and nine question naires were returned and analysed . Test-retest reliability was tested in 50 r and omly selected patients , of those 42 completed the question naire after 2 weeks for a second time . RESULTS Item-scale correlations were reasonably good as well as the discriminative power of separate scales . The assessment of internal consistency reliability also revealed satisfactory values ; Cronbach 's alpha was 0.77 or higher for all scales . The test-retest reliability , estimated in an intraclass correlation coefficient ( ICC ) , exceeded 0.90 , except the " social activities " scale ( 0.87 ) . Since only patients with OA of the lower limb were enrolled , substantial floor effects occurred in the " arm function " ( 28.2 % ) and the " h and and finger function " scale ( 29.2 % ) . The principal factor analysis confirmed the postulated three-factor structure with a physical , physiological and social dimension , explaining 48.5 % , 13.9 % and 6.8 % of the variation , respectively . External validity was assessed by calculating correlations to the Western Ontario and MacMaster ( WOMAC ) osteoarthritis question naire a pain visual analogue scale ( VAS ) and the Kellgren score as well as to disease duration . Spearman 's " R " achieved satisfactory values for the corresponding WOMAC scales and the pain-VAS . Correlations with disease duration as well as with the radiological grading were low . CONCLUSION The GERMAN- AIMS 2 is a reliable and valid instrument to assess the quality of life ( QoL ) in primary care patients suffering from OA
Conclusion Based on this literature review , the disease-specificHAQ and the generic SF-36 can currently be most confidently recommended to measure PF in RA for most research purpose s. The HAQ , however , was frequently associated with considerable ceiling effects while the SF-36 has limited content coverage .
Background The aim of this study was to systematic ally review the content validity and measurement properties of all physical function ( PF ) scales which are currently vali date d for use with patients with rheumatoid arthritis ( RA ) .