Validating patient and physician versions of the shared decision making questionnaire in oncology settingShow others and affiliations
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
2019-06-142019-06-142020-01-30Bibliographically approved