title: Measurement properties of instruments assessing self-efficacy in patients with rheumatic diseases.
abstract: The measurement properties of instruments assessing self-efficacy (SE) in patients with rheumatic diseases were reviewed. The consensus-based standards for the selection of health measurement instruments (COSMIN) checklist was applied following systematic searches of seven electronic databases from 1989 to December 2011. Fifteen articles met the inclusion criteria that included the arthritis SE scales (ASES), generalized SE scale (GSES), joint protection SE scale (JP-SES), Marcus & Resnick SE exercise behaviour (SEEB) instruments, and RA SE scale (RASE). The ASES and RASE have undergone more than one evaluation. There was little formal evaluation of content validity for the instruments. Evidence for the RASE suggests that it is not unidimensional. The JP-SES and SEEB were evaluated using modern psychometric methods. The instruments require further evaluation before application. The quality of the evidence for the ASES and RASE is generally poor. The generic focus of the GSES limits its relevance. The JP-SES and SEEB have only undergone one evaluation and that relating to the latter was narrow in scope. Future studies should address these methodological weaknesses.
authors.affiliation: National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway. andrew.garratt@kunnskapssenteret.no.
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Garratt
authors.affiliation: National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.
authors.forename: Ida
authors.initials: I
authors.lastname: Løchting
authors.affiliation: National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.
authors.forename: Geir
authors.initials: G
authors.lastname: Smedslund
authors.affiliation: National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.National Resource Centre for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Norwegian Knowledge Centre for the Health Services, Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.
authors.forename: Kåre B
authors.initials: KB
authors.lastname: Hagen
mesh_terms: D000368:Aged; D016208:Databases, Factual; D003697:Delphi Technique; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012216:Rheumatic Diseases / Q000523:psychology*; D020377:Self Efficacy; D011795:Surveys and Questionnaires
keywords: COSMIN; arthritis self-efficacy scales; questionnaire; reliability; self-efficacy; survey; validity