Introduction:

This study aimed to estimate the psychometric properties of the Scale of Reactions to Experiences of Unequal Treatment in Health, from Baeza-Rivera (2015), and to determine any statistically significant differences between those using the private and public healthcare systems and those belonging to the Mapuche ethnic group.

Materials and Methods:

The Scale of Reactions to Experiences of Unequal Treatment in Health was used in 337 participants (mostly women) with a mean age of 31 years. Of these, 57% reportedly used the public healthcare system and 32% belonged to the Mapuche ethnic group. Subsequently, exploratory factor analysis and reliability analysis using Cronbach's alpha and factorial analysis of variance were conducted. Results: The findings demonstrated that this scale has ideal psychometric properties, such as reliability and factorial validity, and it can be used in a population with characteristics similar to those of the sample population used in this study. Additionally, statistically significant differences were observed between those using the healthcare systems and those belonging to the Mapuche ethnic group.

Conclusions:

This scale shows adequate psychometric properties, such as the two related factors reliability and factorial validity, and can be used in health-related contexts, thus allowing for an understanding of health-disease processes.

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