Sodium and potassium intake estimated using two methods in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)

dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorPEREIRA, Taisa Sabrina Silva
dc.contributor.authorBENSENOR, Isabela Judith Martins
dc.contributor.authorMELENDEZ, Jorge Gustavo Velasquez
dc.contributor.authorFARIA, Carolina Perim de
dc.contributor.authorCADE, Nagela Valadao
dc.contributor.authorMILL, Jose Geraldo
dc.contributor.authorMOLINA, Maria del Carmen Bisi
dc.date.accessioned2016-07-04T13:52:02Z
dc.date.available2016-07-04T13:52:02Z
dc.date.issued2015
dc.description.abstractCONTEXT AND OBJECTIVE: Sodium and potassium intake from different food sources is an important issue regarding cardiovascular physiology. Epidemiological assessment of the intake of these electrolytes intake is done through food frequency questionnaires or urinary excretion measurements. Our aim was to compare these methods using a sample of Brazilian civil servants. DESIGN AND SETTING: Cross-sectional baseline evaluation from the Brazilian Longitudinal Study of Adult Health. METHODS: Sodium and potassium intake was obtained using two methods: a semi-quantitative questionnaire including 114 food items; and overnight 12-hour urinary excretion measurement. Sodium and potassium estimates obtained through the questionnaire were adjusted for energy intake using the residual method. Urinary excretion measurements were considered valid if they met three adequacy criteria: collection time, volume and total creatinine excretion. Mean nutrients were estimated, and Spearman correlations were calculated. Sodium and potassium intake was categorized into quintiles, and weighted kappa coefficients and percentage agreement were calculated. The significance level for all tests was 0.05. RESULTS: Data from 15,105 participants were analyzed, and significant differences between mean intakes of sodium (questionnaire: 4.5 +/- 1.7 g; urine: 4.2 +/- 2.1 g) and potassium (questionnaire: 4.7 +/- 1.8 g; urine: 2.4 +/- 1 g) were found. Weak agreement was found for sodium (K = 0.18) and potassium (K = 0.16). The percentage disagreement between methods ranged from 41.8 to 44.5%, while exact concordance ranged from 22.1% to 23.9%. CONCLUSIONS: The agreement between the food frequency questionnaire and urinary excretion measurements for assessment of sodium and potassium intakes was modest.
dc.description.abstractCONTEXTO E OBJETIVO: O consumo de sódio e potássio de diferentes fontes alimentares é uma questão importante para a fisiologia cardiovascular. A avaliação epidemiológica do consumo desses eletrólitos é feita pelo questionário de frequência alimentar ou pela excreção urinária. O objetivo deste estudo é comparar esses métodos em uma amostra de servidores públicos brasileiros. TIPO DE ESTUDO E LOCAL: Avaliação transversal da linha de base do Estudo Longitudinal de Saúde do Adulto. MÉTODOS: O consumo de sódio e potássio foi obtido por dois métodos: questionário semi-quantitativo com 114 itens alimentares e excreção urinária de 12 horas noturnas. Estimativas de sódio e potássio obtidas pelo questionário foram ajustadas pela energia utilizando o método residual. A excreção urinária foi considerada válida se atendesse a três critérios: tempo de coleta, volume e excreção total de creatinina adequados. Foram estimadas médias dos nutrientes e calculada a correlação de Spearman. O consumo de sódio e potássio foi categorizado em quintis e foram calculados o kappa ponderado e o percentual de concordância. O nível de significância para todos os testes foi de 0,05. RESULTADOS: Foram analisados dados de 15,105 participantes e encontradas diferenças significativas entre médias de sódio (questionário: 4,5 ± 1,7 g; urina: 4,2 ± 2,1 g) e potássio (questionário: 4,7 ± 1,8 g; urina: 2,4 ± 1 g). Foi encontrada fraca concordância para sódio (K = 0,18) e potássio (K = 0,16). Percentuais de discordância entre métodos variaram de 41,8-44,5%; concordâncias exatas de 22,1-23,9%. CONCLUSÃO: A concordância entre o questionário de frequência alimentar e excreção urinária para avaliação do consumo de sódio e potássio foi modesta.
dc.description.indexMEDLINE
dc.description.sponsorshipBrazilian Ministry of Health (Science and Technology Department)
dc.description.sponsorshipBrazilian Ministry of Science and Technology
dc.description.sponsorshipCNPq (National Research Council) [01 06 0010.00 RS, 01 06 0212.00 BA, 01 06 0300.00 ES, 01 06 0278.00 MG, 01 06 0115.00 SP, 01 06 0071.00 RJ]
dc.identifier.citationSAO PAULO MEDICAL JOURNAL, v.133, n.6, p.510-516, 2015
dc.identifier.doi10.1590/1516-3180.2015.01233108
dc.identifier.issn1516-3180
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/13879
dc.languagepor
dc.language.isoeng
dc.publisherASSOCIACAO PAULISTA MEDICINA
dc.relation.ispartofSao Paulo Medical Journal
dc.rightsopenAccess
dc.rights.holderCopyright ASSOCIACAO PAULISTA MEDICINA
dc.subjectEpidemiologic studies
dc.subjectElectrolytes
dc.subjectBiological markers
dc.subjectDiet
dc.subjectUrine specimen collection
dc.subjectEstudos epidemiológicos; Eletrólitos
dc.subjectMarcadores biológicos
dc.subjectDieta
dc.subjectColeta de urina
dc.subject.otherfood frequency questionnaire
dc.subject.otherexcretion
dc.subject.otherassociation
dc.subject.otherbiomarkers
dc.subject.wosMedicine, General & Internal
dc.titleSodium and potassium intake estimated using two methods in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)
dc.title.alternativeConsumo de sódio e potássio estimado por dois métodos no Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil)
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.author.externalPEREIRA, Taisa Sabrina Silva:Univ Fed Espirito Santo, BR-29043900 Vitoria, ES, Brazil
hcfmusp.author.externalMELENDEZ, Jorge Gustavo Velasquez:Univ Fed Espirito Santo, BR-29043900 Vitoria, ES, Brazil
hcfmusp.author.externalFARIA, Carolina Perim de:Univ Fed Espirito Santo, BR-29043900 Vitoria, ES, Brazil
hcfmusp.author.externalCADE, Nagela Valadao:Univ Fed Espirito Santo, BR-29043900 Vitoria, ES, Brazil
hcfmusp.author.externalMILL, Jose Geraldo:Univ Fed Espirito Santo, BR-29043900 Vitoria, ES, Brazil
hcfmusp.author.externalMOLINA, Maria del Carmen Bisi:Univ Fed Espirito Santo, BR-29043900 Vitoria, ES, Brazil
hcfmusp.citation.scopus16
hcfmusp.contributor.author-fmusphcISABELA JUDITH MARTINS BENSEñOR
hcfmusp.description.beginpage510
hcfmusp.description.endpage516
hcfmusp.description.issue6
hcfmusp.description.volume133
hcfmusp.origemWOS
hcfmusp.origem.pubmed26760125
hcfmusp.origem.scieloSCIELO:S1516-31802015000600510
hcfmusp.origem.scopus2-s2.0-84954323129
hcfmusp.origem.wosWOS:000368271900009
hcfmusp.publisher.citySAO PAULO
hcfmusp.publisher.countryBRAZIL
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