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0197/2025 - Scale to measure the knowledge about eating among teachers according to the Brazilian Dietary Guidelines
Escala para avaliar o conhecimento sobre alimentação entre professores segundo o Guia Alimentar para a População Brasileira

Author:

• Thanise Sabrina Souza Santos - Santos, TSS - <thanisesouza@gmail.com>
ORCID: https://orcid.org/0000-0003-4087-1815

Co-author(s):

• Geralda Kelen Fonseca - Fonseca,GK - <kelensme@gmail.com>
ORCID: https://orcid.org/0000-0003-1015-7688
• Mariana Mendes Pereira - Pereira, MM - <mariana.mendes@edu.montesclaros.mg.gov.br>
ORCID: https://orcid.org/0000-0002-1847-1746.
• Marise Fagundes Silveira - Silveira, MF - <marise.silveira@unimontes.br>
ORCID: https://orcid.org/0000-0002-8821-3160
• Lucineia de Pinho - Pinho, L - <lucineiapinho@gmail.com>
ORCID: https://orcid.org/0000-0002-2947-5806


Abstract:

Psychometric study aimed to adapt and validate a scale to measure the knowledge of healthy eating among teachers. After selecting an instrument (GAB1), its writing was adapted to school environment and the clarity, relevance, and pertinence of the 16 questions were assessed. Teachers responded to the adapted questionnaire and their responses were analyzed using three-parameter logistic model of Item Response Theory. The parameters were analyzed to maintain or exclude the question on the scale, followed by analysis of the fit. Levels of interpretation of the scale were proposed and descriptive analyzes were carried out to characterize the teachers. The questions presented satisfactory clarity, relevance, and pertinence. After analyzing the teachers’ responses, the final model (with 10 questions) presented adequate goodness-of-fit: RMSEA=0.012; SRMSR=0.042; TLI=0.99 e CFI=0.99. Three level of knowledge were identified: food choice; since food to meals; and Food and Nutrition Education. Teachers who worked in schools where healthy eating was included in the program content showed greater knowledge. The scale GAB1-professores contributes to planning and evaluating teacher qualification processes.



Keywords:

Food Guide. Food and Nutrition Education. Surveys and Questionnaires. Psychometrics.

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Cite

Santos, TSS, Fonseca,GK, Pereira, MM, Silveira, MF, Pinho, L. Scale to measure the knowledge about eating among teachers according to the Brazilian Dietary Guidelines. Cien Saude Colet [periódico na internet] (2025/Jun). [Citado em 05/12/2025]. Está disponível em: http://www.cienciaesaudecoletiva.com.br/en/articles/scale-to-measure-the-knowledge-about-eating-among-teachers-according-to-the-brazilian-dietary-guidelines/19673?id=19673



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