Validade relativa de um questionário de freqüência alimentar para utilização em adultos
Palabras clave:
Epidemiologia nutricional, Inquéritos sobre dietas., Métodos, QuestionárioResumen
Objective
To validate a semi quantitative food frequency questionnaire to assess the food intake of adults in the city of Viçosa, Minas Gerais.
Methods
Ninety-four adults of both genders and representing different educational levels. As a reference method for the validation study four 24 hour dietary recalls were used with intervals of one month in between. A semi quantitative food frequency questionnaire containing 58 food items was applied at the end of the study. The dietetic data was calculated using Diet Pro software and analyzed according to difference of means or medians and Pearson’s correlation. The correlation coefficients were adjusted for energy and corrected for intrapersonal variance. Cross classification was used for comparing both methods.
Results
Differences of means or medians revealed underestimation of the semi quantitative food frequency questionnaire on determining the consumption of micronutrients (vitamin C, retinol, and calcium). However, when evaluated by the correlation coefficients and corrected for the variance, these micronutrients presented adequate values; lipid was the only nutrient that indicated low consistency in the dietary assessment among the methods (r=0.33); the other nutrients showed a correlation varying from r=0.40 to r=0.76, with a mean of r=0.52. The correct classification of the methods presented a non-perfect agreement, but acceptable among
the evaluated methods.
Conclusion
The performance of the semi quantitative food frequency questionnaire in the assessment of the habitual food intake was acceptable for most of the nutrients in the studied population. The studied questionnaire can be adapted and used in other populations, but a new validation study is needed if the characteristics of the population differ.
Citas
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Derechos de autor 2023 Sandra Patrícia CRISPIM, Rita de Cássia Lanes RIBEIRO, Emanuelle PANATO, Margarida Maria Santana da SILVA, Lina Enriqueta Frandsen Paez ROSADO, Gilberto Paixão ROSADO
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
