title: Construct Validity of the Dutch Version of the 12-Item Partners in Health Scale: Measuring Patient Self-Management Behaviour and Knowledge in Patients with Chronic Obstructive Pulmonary Disease.
abstract: OBJECTIVE
  The 12-item Partners in Health scale (PIH) was developed in Australia to measure self-management behaviour and knowledge in patients with chronic diseases, and has undergone several changes. Our aim was to assess the construct validity and reliability of the latest PIH version in Dutch COPD patients.
  
  
  METHODS
  The 12 items of the PIH, scored on a self-rated 9-point Likert scale, are used to calculate total and subscale scores (knowledge; coping; recognition and management of symptoms; and adherence to treatment). We used forward-backward translation of the latest version of the Australian PIH to define a Dutch PIH (PIH(Du)). Mokken Scale Analysis and common Factor Analysis were performed on data from a Dutch COPD sample to investigate the psychometric properties of the Dutch PIH; and to determine whether the four-subscale solution previously found for the original Australian PIH could be replicated for the Dutch PIH.
  
  
  RESULTS
  Two subscales were found for the Dutch PIH data (n = 118); 1) knowledge and coping; 2) recognition and management of symptoms, adherence to treatment. The correlation between the two Dutch subscales was 0.43. The lower-bound of the reliability of the total scale equalled 0.84. Factor analysis indicated that the first two factors explained a larger percentage of common variance (39.4% and 19.9%) than could be expected when using random data (17.5% and 15.1%).
  
  
  CONCLUSIONS
  We recommend using two PIH subscale scores when assessing self-management in Dutch COPD patients. Our results did not support the four-subscale structure as previously reported for the original Australian PIH.
authors: Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, The Netherlands.|Department of Research Methodology, Measurement, and Data-Analysis, Faculty of Behavioural, Management and Social sciences, University of Twente, Enschede, The Netherlands.|School of Medicine, Flinders University, Adelaide, South Australia, Australia.
authors: Anke
authors: A
authors: Lenferink
authors: School of Medicine, Flinders University, Adelaide, South Australia, Australia.|Department of Respiratory Medicine, Repatriation General Hospital, Adelaide, South Australia, Australia.
authors: Tanja
authors: T
authors: Effing
authors: Flinders Human Behaviour and Health Research Unit, Flinders University, Adelaide, Australia.
authors: Peter
authors: P
authors: Harvey
authors: Flinders Human Behaviour and Health Research Unit, Flinders University, Adelaide, Australia.
authors: Malcolm
authors: M
authors: Battersby
authors: School of Medicine, Flinders University, Adelaide, South Australia, Australia.|Department of Respiratory Medicine, Repatriation General Hospital, Adelaide, South Australia, Australia.
authors: Peter
authors: P
authors: Frith
authors: Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, The Netherlands.
authors: Wendy
authors: W
authors: van Beurden
authors: Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, The Netherlands.|Department of Research Methodology, Measurement, and Data-Analysis, Faculty of Behavioural, Management and Social sciences, University of Twente, Enschede, The Netherlands.
authors: Job
authors: J
authors: van der Palen
authors: Centre for Educational Measurement at the University of Oslo (CEMO), Faculty of Educational Sciences, University of Oslo, Oslo, Norway.
authors: Muirne C S
authors: MC
authors: Paap
mesh_terms: D000368:Aged; D015897:Comorbidity; D005163:Factor Analysis, Statistical; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D010349:Patient Compliance; D010353:Patient Education as Topic; D011594:Psychometrics; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications / Q000175:diagnosis* / Q000523:psychology*; D015203:Reproducibility of Results; D012648:Self Care; D057566:Self Report; D011795:Surveys and Questionnaires