An empirical evaluation of the SF-12, SF-6D, EQ-5D and Michigan Hand Outcome Questionnaire in patients with rheumatoid arthritis of the hand

Health and Quality of Life Outcomes

Research

Mark Williams¹  Stavros Petrou²  Melina Dritsaki³  Sarah E. Lamb³ 

[1] Department of Sport and Health Sciences, Oxford Brookes University, Oxford, UK;Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry, UK;Nuffield Department of Orthopaedic Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK;

关键词: Utility measures;    Outcome assessment;    Measurement properties;    Health Economics;    Rheumatoid arthritis;    EQ-5D;    SF12;    SF-6D;   

DOI  :  10.1186/s12955-016-0584-6

 received in 2016-05-27, accepted in 2016-12-29,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundThe aim of this study was to assess the psychometric properties, namely acceptability, validity, reliability, interpretability and responsiveness of the EuroQol EQ-5D (EQ-5D visual analogue (VAS) and EQ-5D (utility)), Short Form 12 Dimensions (SF-12), SF-6D and Michigan Hand Outcome Questionnaire (MHQ) in patients with rheumatoid arthritis (RA) of the hand.MethodsThe empirical investigation was based upon data from a randomised controlled trial of 488 adults with rheumatoid arthritis who had pain and dysfunction of the hands and/or wrists. Participants completed the EQ-5D, SF-12 and MHQ at baseline and at 4 and 12 months follow up. Acceptability was measured using completion rates over time; construct validity using the “known groups” approach, based on pain troublesomeness; convergent validity using spearman’s rho correlation (ρ); reliability using internal consistency (Cronbach’s alpha); interpretability using minimal important differences (MID); and responsiveness using effect sizes and standardised response means (SRM) stratified by level of self-rated improvement in hand and wrist function or level of self-rated benefit and satisfaction from trial treatments.ResultsAt baseline, the study population had a mean age of 62.4 years, a mean MHQ score of 52.1 and included 76% women. The EQ-5D (utility) had the highest completion rates across time points. All instruments discriminated between pre-specified groups based on pain troublesomeness. Convergent validity analysis indicated that the MHQ score correlated strongly with the EQ-5D (ρ = 0.65) and SF-6D (ρ = 0.63) utility scores. The MHQ was most responsive at detecting change in indicators of RA pain severity between baseline and 4 months, whilst minimal important differences varied considerably across PROMs.ConclusionsThe instruments evaluated in this study displayed varying psychometric properties in the context of RA of the hand. The selection of a preferred instrument in evaluative studies should ultimately depend on the relative importance placed on individual psychometric properties and the importance placed on generation of health utilities for economic evaluation purposes.

【 授权许可】

CC BY   
© The Author(s). 2017