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Validating patient and physician versions of the shared decision making questionnaire in oncology setting
Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Department of Laboratory Medicine and Division of Hematology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
Pediatric Health Research Center, Tabriz University of Medical Sciences Tabriz, Iran.
Jönköping University, School of Health and Welfare, HHJ, Dep. of Nursing Science. Jönköping University, School of Health and Welfare, HHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare).ORCID iD: 0000-0003-0976-531x
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2019 (English)In: Health Promotion Perspectives, ISSN 2228-6497, Vol. 9, no 2, p. 105-114Article in journal (Refereed) Published
Abstract [en]

Background: This study investigated the psychometric properties of the 9-Item Shared Decision Making Questionnaire (SDM-Q-9) and the 9-Item Shared Decision-Making Questionnaire-Physician version (SDM-Q-Doc) using comprehensive and thorough psychometric methods in an oncology setting.

Methods: Cancer survivors (n=1783; 928 [52.05%] males) and physicians (n=154; 121[78.58%] males) participated in this study. Each cancer survivor completed the SDM-Q-9. Physicians completed the SDM-Q-Doc for each of their cancer patient. Confirmatory factor analysis (CFA) and Rasch model were used to test the psychometric properties of SDM-Q-9 and SDM-Q-Doc.

Results: SDM-Q-9 and SDM-Q-Doc demonstrated unidimensional structure in CFA and Rasch model. In addition, the measurement invariance was supported for both SDM-Q-9 and SDM-Q-Doc across sex using the multigroup CFA. Rash analysis indicates no differential item functioning (DIF) across sex for all the SDM-Q-9 and SDM-Q-Doc items. SDM-Q-9 and SDM-Q-Doc were moderately correlated (r=0.41; P<0.001).

Conclusion: SDM-Q-9 and SDM-Q-Doc are valid instruments to assess shared decision making in the oncology setting.

Place, publisher, year, edition, pages
Tabriz University of Medical Sciences , 2019. Vol. 9, no 2, p. 105-114
Keywords [en]
Confirmatory factor analysis; Cancer; Rasch; Instrumental study
National Category
Health Care Service and Management, Health Policy and Services and Health Economy
Identifiers
URN: urn:nbn:se:hj:diva-44513DOI: 10.15171/hpp.2019.15ISI: 000468912400004Scopus ID: 2-s2.0-85066879481Local ID: POA HHJ 2019;HHJADULTIS,HHJIMPROVEISOAI: oai:DiVA.org:hj-44513DiVA, id: diva2:1325166
Available from: 2019-06-14 Created: 2019-06-14 Last updated: 2019-06-18Bibliographically approved

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Browall, MariaBroström, AndersPakpour, Amir H.

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HHJ, Dep. of Nursing ScienceHHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare)HHJ. ADULT
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