The SLE-specific functioning support outlook: Scale development and psychometric evaluation of a new instrument
Keywords:
fatigue, instrument, social support, daily functioning, pain, SLEAbstract
Background: The indispensable influence of social support is not commonly considered in most instruments for measuring daily functioning. There is a gap in self-report measures on the perceived impact of social support on daily functioning. Objectives: This study aimed to develop and psychometrically evaluate the Functioning Support Outlook Scale, a new instrument designed to assess the perceived or anticipated impact of social support on daily functioning. Design: Methodological design. Methods: Involves three phases: (1) conceptualization and item generation, (2) preliminary item evaluation, and (3) field testing of the instrument. Results: A 13-item instrument emerged with two subscales, namely, Perceived Enhancing Vitality and Perceived Fighting Endurance, which explained 81.48% of the total variance. The Cronbach’s alpha of the final version is 0.967, while that of the subscale Perceived Enhancing Vitality is 0.954, with 5 items, and that of the subscale Perceived Fighting Endurance, with 8 items, is 0.957. Conclusion: The newly developed instrument is valid and reliable, has high content validity and acceptable Cronbach’s alpha coefficient and can be used to assess the daily functioning of individuals with alterations in functioning.
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