| Sources of variation of energy and nutrient intake among adolescents in São Paulo, Brazil. | |
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MedLine Citation:
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PMID: 21180986 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The aim of the current study was to describe the sources of variation of energy and nutrient intake and to calculate the number of repetitions of diet measurements to estimate usual intake in adolescents from São Paulo, Brazil. Data was collected using 24-hour dietary recalls (24hR) in 273 adolescents between 2007 and 2008. Individuals completed a repeat 24hR around two months later. The sources of variation were estimated using the random effect model. Variance ratios (within-person to between-person variance ratio) and the number of repetitions of 24hR to estimate usual intake were calculated. The principal source of variation was due to within-person variance. The contribution of day of week and month of year was less than 8%. Variations ranged from 1.15 for calcium to 7.31 for vitamin E. The number of 24hR repeats required to estimate usual intake varied according to nutrient and gender, numbering 15 for males and 8 for females. |
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Authors:
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Eliseu Verly Junior; Regina Mara Fisberg; Chester Luis Galvão Cesar; Dirce Maria Lobo Marchioni |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Cadernos de saúde pública / Ministério da Saúde, Fundação Oswaldo Cruz, Escola Nacional de Saúde Pública Volume: 26 ISSN: 1678-4464 ISO Abbreviation: Cad Saude Publica Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-12-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8901573 Medline TA: Cad Saude Publica Country: Brazil |
Other Details:
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Languages: eng Pagination: 2129-37 Citation Subset: IM |
Affiliation:
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Universidade de São Paulo, Brasil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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