title: Instruments assessing attitudes toward or capability regarding self-management of osteoarthritis: a systematic review of measurement properties.
abstract: To make a recommendation on the "best" instrument to assess attitudes toward and/or capabilities regarding self-management of osteoarthritis (OA) based on available measurement property evidence.
  
  
  
  Electronic searches were performed in MEDLINE, EMBASE, CINAHL and PsychINFO (inception to 27 December 2016). Two reviewers independently rated measurement properties using the Consensus-based Standards for the selection of Health Measurement Instruments (COSMIN) 4-point scale. Best evidence synthesis was determined by considering COSMIN ratings for measurement property results and the level of evidence available for each measurement property of each instrument.
  
  
  
  Eight studies out of 5653 publications met the inclusion criteria, with eight instruments identified for evaluation: Multidimensional Health Locus of Control (MHLC), Perceived Behavioural Control (PBC), Patient Activation Measure (PAM), Educational Needs Assessment (ENAT), Stages of Change Questionnaire in Osteoarthritis (SCQOA), Effective Consumer Scale (EC-17) and Perceived Efficacy in Patient-Physician Interactions five item (PEPPI-5) and ten item scales. Measurement properties assessed for these instruments included internal consistency (k = 8), structural validity (k = 8), test-retest reliability (k = 2), measurement error (k = 1), hypothesis testing (k = 3) and cross-cultural validity (k = 3). No information was available for content validity, responsiveness or minimal important change (MIC)/minimal important difference (MID). The Dutch PEPPI-5 demonstrated the best measurement property evidence; strong evidence for internal consistency and structural validity but limited evidence for reliability and construct validity.
  
  
  
  Although PEPPI-5 was identified as having the best measurement properties, overall there is a poor level of evidence currently available concerning measurement properties of instruments to assess attitudes toward and/or capabilities regarding osteoarthritis self-management. Further well-designed studies investigating measurement properties of existing instruments are required.
authors.affiliation: Kolling Institute of Medical Research, Institute of Bone and Joint Research, University of Sydney, Australia; Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, University of Sydney, Australia; Physiotherapy Department, Royal North Shore Hospital, Sydney, Australia. Electronic address: jillian.eyles@sydney.edu.au.
authors.forename: J P
authors.initials: JP
authors.lastname: Eyles
authors.affiliation: Kolling Institute of Medical Research, Institute of Bone and Joint Research, University of Sydney, Australia; Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, University of Sydney, Australia. Electronic address: david.hunter@sydney.edu.au.
authors.forename: D J
authors.initials: DJ
authors.lastname: Hunter
authors.affiliation: Kolling Institute of Medical Research, Institute of Bone and Joint Research, University of Sydney, Australia; Department of Rheumatology, Royal North Shore Hospital and Northern Clinical School, University of Sydney, Australia. Electronic address: sarah.meneses@sydney.edu.au.
authors.forename: S R F
authors.initials: SRF
authors.lastname: Meneses
authors.affiliation: School of Health & Rehabilitation Sciences, University of Queensland, Australia. Electronic address: n.collins1@uq.edu.au.
authors.forename: N J
authors.initials: NJ
authors.lastname: Collins
authors.affiliation: Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, The University of Melbourne, Australia. Electronic address: fdobson@unimelb.edu.au.
authors.forename: F
authors.initials: F
authors.lastname: Dobson
authors.affiliation: Kolling Institute of Medical Research, Institute of Bone and Joint Research, University of Sydney, Australia; Physiotherapy Department, Royal North Shore Hospital, Sydney, Australia. Electronic address: Barbara.Lucas@health.nsw.gov.au.
authors.forename: B R
authors.initials: BR
authors.lastname: Lucas
authors.affiliation: Centre for Physical Health, Department of Medicine and Health Sciences, Macquarie University, Sydney, Australia. Electronic address: kathryn.mills@mq.edu.au.
authors.forename: K
authors.initials: K
authors.lastname: Mills
mesh_terms: D001076:Aptitude; D001294:Attitude to Health; D019317:Evidence-Based Medicine; D006801:Humans; D010003:Osteoarthritis / Q000523:psychology* / Q000628:therapy; D011594:Psychometrics; D000073278:Self-Management / Q000523:psychology*; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D009626:Terminology as Topic
keywords: Clinimetrics; Instruments; Measurement properties; Psychometrics; Self-management; Systematic review