Alternative distributions to estimate usual intake of nutrients for groups
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Data
2011
Autores
Corrente, José Eduardo [UNESP]
Morimoto, Juliana
Marchioni, Dirce Maria Lobo
Fisberg, Regina Mara
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Resumo
When assessing food intake patterns in groups of individuals, a major problem is finding usual intake distribution. This study aimed at searching for a probability distribution to estimate the usual intake of nutrients using data from a cross-sectional investigation on nutrition students from a public university in São Paulo state, Brazil. Data on 119 women aged 19 to 30 years old were used. All women answered a questionnaire about their lifestyle, diet and demographics. Food intake was evaluated from a non-consecutive three-day 24-hour food record. Different probability distributions were tested for vitamins C and E, panthotenic acid, folate, zinc, copper and calcium where data normalization was not possible. Empirical comparisons were performed, and inadequacy prevalence was calculated by comparing with the NRC method. It was concluded that if a more realistic distribution for usual intake is found, results can be more accurate as compared to those achieved by other methods.
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Palavras-chave
Diet, Nutrients, Adequate intake, Measurement error models, Usual intake distribution
Como citar
Journal of Life Sciences, v. 5, p. 574-579, 2011.