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J Hum Nutr Diet. 2013 Jun;26(3):230-3. doi: 10.1111/jhn.12027. Epub 2012 Dec 10.

Factors associated with the calibration of a food frequency questionnaire for the Bambuí Project, Brazil.

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  • 1Departamento de Enfermagem Materno-Infantil e Saúde Pública-Escola de Enfermagem, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Abstract

BACKGROUND:

The present study aimed to calibrate a food frequency questionnaire (FFQ) using one 24-h recall (R24) associated with foodstuff replicas.

METHODS:

Calibration was performed by linear regression. Of a probability sample of 150 individuals (>18 years) of the town of Bambui, 98 completed the study.

RESULTS:

The mean age of the participants was 43.8 years and 63.3% were women. The calibration of the FFQ included sex for the estimation of iron, protein and zinc; and an interaction between sex and R24 was significant for vitamin A and cholesterol models. Age contributed to the vitamin C, polyunsaturated fatty acids, proteins and zinc models, and an interaction between age and R24 was significant for protein and zinc.

CONCLUSIONS:

Calibration coefficients and many interactions in linear regression models revealed important differences between dietary methods, indicating the complexity encountered when combining two methodologies for estimating food intake.

PMID:
23231428
DOI:
10.1111/jhn.12027
[PubMed - indexed for MEDLINE]
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