Davy Paap1,2,3, Ernst Schrier3, Pieter U Dijkstra3,4. 1. Physical Therapy Sciences, program in Clinical Health Sciences, University Medical Center Utrecht, Utrecht, Netherlands. 2. Department Physical Therapy, Expertise Center of Primary Care Groningen, Groningen, Netherlands. 3. Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands. 4. Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.
Abstract
Background: In rehabilitation, therapeutic alliance is associated with improvements in clinical outcomes. The Working Alliance Inventory (WAI) measures therapeutic alliance and is frequently used in rehabilitation research; however, it has not been validated for rehabilitation. Objectives: To determine content validity, internal consistency and construct validity of the Working Alliance Inventory Rehabilitation Dutch Version (WAI-ReD). Methods: In phase 1, content and face validity of the WAI-ReD was judged by professionals (n = 15) and in phase 2 by patients (n = 22). In phase 3, 14 hypotheses were tested in patients (n = 138) regarding: content validity (i.e., missing items, floor, and ceiling effects); internal consistency; and construct validity (i.e., factor structural testing correlations of WAI-ReD scores with Session Rating Scale (SRS), the Helping Alliance Questionnaire II (HAQ-II), and Visual Analog Scale of Pain (VASpain)). Results: After phase 1 and phase 2, the WAI-ReD was formulated and tested. Content validity; missing items were negligible. Ceiling effects were present in all domains. Internal consistency; Cronbach's α ranged between 0.804 and 0.927. Construct validity; correlations between WAI-ReD, SRS, HAQ-II, and VASpain fell within the hypothesized ranges. Conclusion: Eleven of the 14 hypotheses were not rejected confirming good clinimetric properties of the WAI-ReD. The WAI-ReD can be used in rehabilitation to measure therapeutic alliance.
Background: In rehabilitation, therapeutic alliance is associated with improvements in clinical outcomes. The Working Alliance Inventory (WAI) measures therapeutic alliance and is frequently used in rehabilitation research; however, it has not been validated for rehabilitation. Objectives: To determine content validity, internal consistency and construct validity of the Working Alliance Inventory Rehabilitation Dutch Version (WAI-ReD). Methods: In phase 1, content and face validity of the WAI-ReD was judged by professionals (n = 15) and in phase 2 by patients (n = 22). In phase 3, 14 hypotheses were tested in patients (n = 138) regarding: content validity (i.e., missing items, floor, and ceiling effects); internal consistency; and construct validity (i.e., factor structural testing correlations of WAI-ReD scores with Session Rating Scale (SRS), the Helping Alliance Questionnaire II (HAQ-II), and Visual Analog Scale of Pain (VASpain)). Results: After phase 1 and phase 2, the WAI-ReD was formulated and tested. Content validity; missing items were negligible. Ceiling effects were present in all domains. Internal consistency; Cronbach's α ranged between 0.804 and 0.927. Construct validity; correlations between WAI-ReD, SRS, HAQ-II, and VASpain fell within the hypothesized ranges. Conclusion: Eleven of the 14 hypotheses were not rejected confirming good clinimetric properties of the WAI-ReD. The WAI-ReD can be used in rehabilitation to measure therapeutic alliance.
Entities:
Keywords:
Therapeutic alliance; assessment and rehabilitation; measurement properties; working alliance
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