Adaptation and evidence of validity of the High Blood Pressure-Focused Health Literacy Scale into Portuguese
DOI:
https://doi.org/10.26694/reufpi.v14i1.6278Keywords:
Health Literacy, Hypertension, Validation Study, Nursing, Health EducationAbstract
Objective: To adapt and estimate the validity evidence based on the content and internal structure of the High Blood Pressure-Focused Health Literacy Scale into Brazilian Portuguese. Method: methodological study with translation and back-translation. The content-based evidence was obtained by a committee of nine experts and 30 people with hypertension. For evidence based on internal structure, the adapted version was applied to 1,318 people with hypertension. Results: The adapted version showed a content validity index of 0.92. Parallel analysis indicated a two-factor structure. Exploratory Factor Analysis with the 43 items showed a negative correlation matrix with large covariance destruction (between 29.8% and 82.6%). The matrix was corrected after 12 items were removed. The final model showed correspondence with the theory and adequacy of the fit indices. Factor 1, Functional Health Literacy, explains 7.63% of the variance. Factor 2, Print Literacy, explains 44.33% of the variance. The reliability indicators were within the standards of adequacy. Conclusion: The adapted instrument showed evidence of validity related to content and internal structure for its application to people with hypertension in Brazil.
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