2008
DOI: 10.1590/s1415-790x2008000300007
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Desenvolvimento e aplicação de um questionário semiquantitativo de freqüência alimentar on-line para estimar a ingestão de cálcio e ferro

Abstract: OBJETIVO: Desenvolver um questionário semiquantitativo de freqüência alimentar on-line para a avaliação de ingestão de cálcio (Ca) e de ferro (Fe). METODOLOGIA: O site de acesso à pesquisa foi o jornal eletrônico Folha Online. Trinta internautas, de ambos os sexos, residentes no estado de São Paulo, com idades de 21 a 45 anos foram selecionados. Informações obtidas de Registros Alimentares de 4 dias em dois meses consecutivos foram comparadas com as do questionário semiquantitativo de freqüência alimentar pree… Show more

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Cited by 8 publications
(8 citation statements)
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“…This adjustment of nutrients using energy is seen as a methodological strategy developed to correctly try to estimate parameters and try to control any eventual confusion effect caused by energy in validation 8,10 studies. The Reduction of coefficient values after the adjustment by energy is useful to other studies [27][28][29][30][31] , which may evidence the presence of systematic errors on sub-or-super account of food consumption 5,31. A large number of validation studies used the Pearson's or the Spearman's correlation coefficient when comparing the methods 9,[27][28][29][30][32][33][34][35][36][37][38][39][40] which turned results more difficult to be evaluated. In spite of the coefficient's attained values, the use of ICC was adopted for viewing the several publications which point to overestimates association when using Pearson's correlation in samples with great inter-subject variability, which as a consequence, could lead to false conclusions concerning the method's validity 23,41 .…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…This adjustment of nutrients using energy is seen as a methodological strategy developed to correctly try to estimate parameters and try to control any eventual confusion effect caused by energy in validation 8,10 studies. The Reduction of coefficient values after the adjustment by energy is useful to other studies [27][28][29][30][31] , which may evidence the presence of systematic errors on sub-or-super account of food consumption 5,31. A large number of validation studies used the Pearson's or the Spearman's correlation coefficient when comparing the methods 9,[27][28][29][30][32][33][34][35][36][37][38][39][40] which turned results more difficult to be evaluated. In spite of the coefficient's attained values, the use of ICC was adopted for viewing the several publications which point to overestimates association when using Pearson's correlation in samples with great inter-subject variability, which as a consequence, could lead to false conclusions concerning the method's validity 23,41 .…”
Section: Discussionmentioning
confidence: 99%
“…For validation, 52 participants were recruited. However, validation studies in Brazil may eventually include less than 50 participants 9,22,29,30 . In addition to that, it may be possible to emphasize a series of limitations inherent to any FFQ as those related to memory, perception, lacking standartization, structure faults, and also due to chance 42 .…”
Section: Discussionmentioning
confidence: 99%
“…The daily intake frequency was calculated based on the weekly and monthly intake frequency of each food. The values, multiplied by the concentration of nutrients in the food, resulted in the daily intake value 30,31 .…”
Section: Principal Independent Variable • Eating Patternsmentioning
confidence: 99%
“…Trata-se de uma pesquisa bibliográfica realizada a partir da consulta eletrônica das bases de dados: "Medi- Foram pesquisados artigos nas diferentes bases de dados, utilizando-se, sem limitação temporal, em português e inglês, as palavras-chave: "foto/fotografia" ou "filmagem" conjugadas a "digital", "alimento", "tamanho da porção", "refeição" e/ou "ingestão alimentar", bem como a associação desses termos com: "precisão", "vali- Outros estudos demonstraram a eficácia na aplicação de questionários computadorizados para obter informações sobre consumo alimentar de indivíduos e grupos populacionais [36][37][38] . No entanto, tal utilização pode não ser a mais adequada para estratos populacionais menos favorecidos ou indivíduos que não estejam habituados ao uso de computador.…”
Section: Métodosunclassified