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Patient Participation in Rehabilitation Questionnaire (PPRQ)-development and psychometric evaluation
J Lindberg1, M Kreuter, L-O Person
11] Institute of Health and Care Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden [2] Gothenburg Centre for Person-Centred Care (GPCC), University of Gothenburg, Gothenburg, Sweden.
Study Design:
A cross-sectional postal questionnaire study.
Objectives:
The aim of the study was to evaluate selected psychometric properties of a draft version of the Patient Participation in Rehabilitation Questionnaire (PPRQ) measuring patients' experiences of participation in care and rehabilitation.
Setting:
Sweden.
Methods:
On the basis of previous qualitative analyses of patient interview data, a 32-item questionnaire covering five domains of participation was developed and sent to 268 persons with spinal cord injury, aged 18-80 years and injured 1-12 years previously. In total, 141 (51%) evaluable questionnaires were returned. Multi-trait analysis was used to assess scaling assumptions by testing item convergent and discriminant validity and internal consistency reliability (Cronbach's α) associated with the hypothesized item-scale structure of the questionnaire.
Result:
Nine items failed to meet scaling assumptions and were omitted. Scaling assumptions were thereafter substantiated for the scales: 'respect and integrity' (6 items); 'planning and decision-making' (4 items); 'information and knowledge' (4 items); 'motivation and encouragement' (5 items); and 'involvement of family' (4 items). Item-scale correlations ranged from 0.67 to 0.85 and most items correlated higher or significantly higher with their hypothesized scale than with other scales. Cronbach's α was 0.89 for all scales.
Conclusion:
The PPRQ appears to adequately assess central aspects of participation in care and rehabilitation from the perspective of patients with spinal cord injury. Further studies using larger samples will be undertaken to confirm the scale structure as well as the sensitivity and responsiveness of the questionnaire.
