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The Nutrition Literacy Assessment Instrument for Brazilians, NLit-Br: An Exploratory Cross-Cultural Validity Study
Lívia Botelho da Silva Sarkis1, Juliana Teruel-Camargo2,3, Heather D Gibbs2
1School of Medicine and Health, Federal University of Juiz de Fora, Juiz de Fora 36038-330, MG, Brazil.
Nutrients
|November 26, 2022
Summary
The Nutrition Literacy Assessment Instrument for Brazilians (NLit-Br) is a valid tool for assessing nutrition literacy in Brazil. This cross-cultural adaptation ensures accurate measurement for the Brazilian population.
Area of Science:
- Public Health
- Nutrition Science
- Health Literacy Assessment
Background:
- Nutrition literacy is crucial for managing chronic diseases.
- Existing assessment tools may not be culturally appropriate for diverse populations.
- Brazil requires a validated instrument to measure nutrition literacy.
Purpose of the Study:
- To cross-culturally adapt and validate the Nutrition Literacy Assessment Instrument for Brazilians (NLit-Br).
- To assess the linguistic and cultural validity of the NLit-Br.
- To evaluate the psychometric properties of the NLit-Br.
Main Methods:
- Observational cross-sectional study in Brazilian chronic disease clinics.
- Two phases: linguistic-cultural adaptation and validity testing.
- Cognitive interviewing, Scale Content Validity Index (S-CVI), Spearman’s Rho correlation with SAHLPA-18, and Kuder-Richardson Formula 20 (KR-20).
Main Results:
- The NLit-Br demonstrated strong content validity (S-CVI = 0.85).
- Internal consistency was confirmed (KR-20 = 0.868).
- A significant and robust correlation was found between NLit-Br and SAHLPA-18 (r = 0.665, p < 0.001).
Conclusions:
- The NLit-Br is a linguistically and culturally valid instrument.
- The NLit-Br accurately measures nutrition literacy in the Brazilian population.
- This validated tool supports public health initiatives and chronic disease management in Brazil.
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