Design and psychometric properties analysis of the Thought Style in Response to Cancer Inventory (IEPRaC)
Abstract
Thought style has been defined as one of the mediating variables to emotional response at a cancer diagnosis. It has been reported in pathological contexts (rumination in depression), but also in normative ones, it has been suggested that thought styles can predict adjustment to a stressor. There are measurement scales used to assess thought style independently (rumination, experiential avoidance), but none of them is adapted for oncologic population and none of them include all three thought styles. Aim: To design and assess psychometric properties of a scale of thought styles in response to a cancer diagnosis. Method: Instrumental Study, divided in two phases: the first, item elaboration and expert judge; the second, psychometric properties analysis. Results: Final version counts with 15 items. Intern Structure resulted in three factors, obtained by an Exploratory Factorial Analysis and corroborated by a Confirmatory Factorial Analisis. Cronbach’s alphas for the subscales resulted appropriate: for rumination 0.87, for cognitive engagement 0.82 and 0.72 for avoidance. All items have evidence for content validity and adequate psychometric properties. Results of Cognitive Engagement subscale had the higher mean and Rumination subscale was the lowest. Conclusion: Thought style in response to a cancer diagnosis scale (IERPaC) has adequate psychometric properties to be used in Mexican oncologic patients.
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