Refinement of the Interprofessional Socialization and Valuing Scale (ISVS-21) and Development of 9-Item Equivalent Versions
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INTRODUCTION: Measures of interprofessional (IP) socialization are needed to capture the role of interprofessional education in preparing students and health practitioners to function as part of IP health care teams. The aims of this study were to refine a previously published version of the Interprofessional Socialization and Valuing Scale (the ISVS-24) and create two shorter equivalent forms to be used in pre-post studies. METHODS: A graded response model was used to identify ISVS items in a practitioner data set (n = 345), with validation (measure invariance) conducted using a separate student sample (n = 341). RESULTS: Analyses indicated a unidimensional 21-item version with excellent measurement properties, Cronbach alpha of 0.988, 95% confidence interval (CI) 0.985-0.991. There was evidence of measure invariance, as there was excellent agreement of the factor scores for the practitioner and student data, intraclass correlation coefficient = 0.993, 95% CI 0.991-0.994. This indicates that the ISVS-21 measures IP socialization consistently across groups. Two 9-item equivalent versions for pre-post use were developed, with excellent agreement between the two forms. The student score agreement for the two item sets was excellent: intraclass correlation coefficient = 0.970, 95% CI 0.963-0.976. DISCUSSION: The ISVS-21 is a refined measure to assess existing levels of IP socialization in practitioners and students, and relate IP socialization to other important constructs such as IP collaboration and the development of an IP identity. The equivalent versions can be used to assess change in IP socialization as a result of interprofessional education.
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