Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results

Detalhes bibliográficos
Autor(a) principal: Victora, César Gomes
Data de Publicação: 1985
Outros Autores: Barros, Fernando Celso, Martines, José Carlos, Béria, Jorge Umberto, Vaughan, John Patrick
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista de Saúde Pública
Texto Completo: https://www.revistas.usp.br/rsp/article/view/23272
Resumo: A cohort of 6,011 urban children born in 1982 in the hospitals of Pelotas, Rio Grande do Sul, was followed up so that their morbidity, mortality and growth could be assessed. These children accounted for over 99% of all births in the city. A 30% sample of the children were visited at home when approximately 12 months old, and the whole population was visited at about 20 months of age. It was possible to locate 81% of the children at 12 months. This proportion increased to 86% at 24 months, due to a change in the logistics of the field work which then included visiting all 69,000 households in the city to locate children whose families had moved within the urban area. The methodology and main difficulties encountered are discussed, and the characteristics at birth of children who were located at the first follow-up visit was compared to those of children lost to follow-up. Children who were not located tended to come from poorer families but the overall differences were not very marked, with more than 75% of children in any of the major socio-economic subgroups being located. The potential use of the large amount of information available on each child is demonstrated by the study of the relationships between birthweight, family income and nutritional status at 9-15 months of age. Birthweight is shown to be a very strong predictor of weight for age, length for age and, to a lesser extent, weight for length, there being virtually no malnutrition among children born with more than 3,000 g. Birthweight is also shown to be closely associated with weight at 9-15 months within all five family income groups, with a given absolute difference in weight at birth persisting to the end of the first year. However, due to the important effects of income on weight gain, a child born with 2,500 g in the lowest income group would be on average 1,200 g below the standard NCHS weight at 12 months, whereas a child with the same birthweight from the highest income group would have caught up with the standard. This study has shown that it is possible to identify a population based cohort of children and to follow them up for two years in a medium-sized Brazilian city.
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spelling Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results Estudo longitudinal das crianças nascidas em 1982 em Pelotas, RS, Brasil: metodologia e resultados preliminares Criança^i1^sdesenvolvimeEpidemiologia^i1^smétoChild^i2^sdevelopmEpidemiologic methods A cohort of 6,011 urban children born in 1982 in the hospitals of Pelotas, Rio Grande do Sul, was followed up so that their morbidity, mortality and growth could be assessed. These children accounted for over 99% of all births in the city. A 30% sample of the children were visited at home when approximately 12 months old, and the whole population was visited at about 20 months of age. It was possible to locate 81% of the children at 12 months. This proportion increased to 86% at 24 months, due to a change in the logistics of the field work which then included visiting all 69,000 households in the city to locate children whose families had moved within the urban area. The methodology and main difficulties encountered are discussed, and the characteristics at birth of children who were located at the first follow-up visit was compared to those of children lost to follow-up. Children who were not located tended to come from poorer families but the overall differences were not very marked, with more than 75% of children in any of the major socio-economic subgroups being located. The potential use of the large amount of information available on each child is demonstrated by the study of the relationships between birthweight, family income and nutritional status at 9-15 months of age. Birthweight is shown to be a very strong predictor of weight for age, length for age and, to a lesser extent, weight for length, there being virtually no malnutrition among children born with more than 3,000 g. Birthweight is also shown to be closely associated with weight at 9-15 months within all five family income groups, with a given absolute difference in weight at birth persisting to the end of the first year. However, due to the important effects of income on weight gain, a child born with 2,500 g in the lowest income group would be on average 1,200 g below the standard NCHS weight at 12 months, whereas a child with the same birthweight from the highest income group would have caught up with the standard. This study has shown that it is possible to identify a population based cohort of children and to follow them up for two years in a medium-sized Brazilian city. Tentou-se acompanhar a morbi-mortalidade e o crescimento de uma coorte de 6.011 crianças urbanas nascidas em 1982 nos hospitais de Pelotas, RS, através de visitas domiciliares aos 12 meses (para uma amostra de 30% das crianças) e aos 20 meses (para toda a população). Estas crianças representaram mais de 99% de todos os nascimentos urbanos naquele ano. Foi possível localizar 81% das crianças aos 12 meses e 86% aos 20 meses, devido a uma mudança na estratégia de trabalho de campo. A metodologia empregada e as principais dificuldades encontradas são descritas e as características ao nascer das crianças localizadas no acompanhamento são comparadas com as características das crianças não localizadas. A potencialidade de uso dos dados coletados é exemplificada através de alguns resultados preliminares mostrando as associações entre o peso ao nascer, a renda familiar e o estado nutricional aos 12 meses. O estudo mostra que é possível acompanhar, com uma perda relativamente pequena, uma coorte de crianças com base populacional em uma cidade brasileira de tamanho médio. Universidade de São Paulo. Faculdade de Saúde Pública1985-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rsp/article/view/2327210.1590/S0034-89101985000100007Revista de Saúde Pública; Vol. 19 No. 1 (1985); 58-68 Revista de Saúde Pública; Vol. 19 Núm. 1 (1985); 58-68 Revista de Saúde Pública; v. 19 n. 1 (1985); 58-68 1518-87870034-8910reponame:Revista de Saúde Públicainstname:Universidade de São Paulo (USP)instacron:USPporhttps://www.revistas.usp.br/rsp/article/view/23272/25300Copyright (c) 2017 Revista de Saúde Públicainfo:eu-repo/semantics/openAccessVictora, César GomesBarros, Fernando CelsoMartines, José CarlosBéria, Jorge UmbertoVaughan, John Patrick2012-05-28T16:09:08Zoai:revistas.usp.br:article/23272Revistahttps://www.revistas.usp.br/rsp/indexONGhttps://www.revistas.usp.br/rsp/oairevsp@org.usp.br||revsp1@usp.br1518-87870034-8910opendoar:2012-05-28T16:09:08Revista de Saúde Pública - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
Estudo longitudinal das crianças nascidas em 1982 em Pelotas, RS, Brasil: metodologia e resultados preliminares
title Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
spellingShingle Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
Victora, César Gomes
Criança^i1^sdesenvolvime
Epidemiologia^i1^sméto
Child^i2^sdevelopm
Epidemiologic methods
title_short Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
title_full Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
title_fullStr Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
title_full_unstemmed Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
title_sort Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
author Victora, César Gomes
author_facet Victora, César Gomes
Barros, Fernando Celso
Martines, José Carlos
Béria, Jorge Umberto
Vaughan, John Patrick
author_role author
author2 Barros, Fernando Celso
Martines, José Carlos
Béria, Jorge Umberto
Vaughan, John Patrick
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Victora, César Gomes
Barros, Fernando Celso
Martines, José Carlos
Béria, Jorge Umberto
Vaughan, John Patrick
dc.subject.por.fl_str_mv Criança^i1^sdesenvolvime
Epidemiologia^i1^sméto
Child^i2^sdevelopm
Epidemiologic methods
topic Criança^i1^sdesenvolvime
Epidemiologia^i1^sméto
Child^i2^sdevelopm
Epidemiologic methods
description A cohort of 6,011 urban children born in 1982 in the hospitals of Pelotas, Rio Grande do Sul, was followed up so that their morbidity, mortality and growth could be assessed. These children accounted for over 99% of all births in the city. A 30% sample of the children were visited at home when approximately 12 months old, and the whole population was visited at about 20 months of age. It was possible to locate 81% of the children at 12 months. This proportion increased to 86% at 24 months, due to a change in the logistics of the field work which then included visiting all 69,000 households in the city to locate children whose families had moved within the urban area. The methodology and main difficulties encountered are discussed, and the characteristics at birth of children who were located at the first follow-up visit was compared to those of children lost to follow-up. Children who were not located tended to come from poorer families but the overall differences were not very marked, with more than 75% of children in any of the major socio-economic subgroups being located. The potential use of the large amount of information available on each child is demonstrated by the study of the relationships between birthweight, family income and nutritional status at 9-15 months of age. Birthweight is shown to be a very strong predictor of weight for age, length for age and, to a lesser extent, weight for length, there being virtually no malnutrition among children born with more than 3,000 g. Birthweight is also shown to be closely associated with weight at 9-15 months within all five family income groups, with a given absolute difference in weight at birth persisting to the end of the first year. However, due to the important effects of income on weight gain, a child born with 2,500 g in the lowest income group would be on average 1,200 g below the standard NCHS weight at 12 months, whereas a child with the same birthweight from the highest income group would have caught up with the standard. This study has shown that it is possible to identify a population based cohort of children and to follow them up for two years in a medium-sized Brazilian city.
publishDate 1985
dc.date.none.fl_str_mv 1985-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/rsp/article/view/23272
10.1590/S0034-89101985000100007
url https://www.revistas.usp.br/rsp/article/view/23272
identifier_str_mv 10.1590/S0034-89101985000100007
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://www.revistas.usp.br/rsp/article/view/23272/25300
dc.rights.driver.fl_str_mv Copyright (c) 2017 Revista de Saúde Pública
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2017 Revista de Saúde Pública
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Saúde Pública
publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Saúde Pública
dc.source.none.fl_str_mv Revista de Saúde Pública; Vol. 19 No. 1 (1985); 58-68
Revista de Saúde Pública; Vol. 19 Núm. 1 (1985); 58-68
Revista de Saúde Pública; v. 19 n. 1 (1985); 58-68
1518-8787
0034-8910
reponame:Revista de Saúde Pública
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Revista de Saúde Pública
collection Revista de Saúde Pública
repository.name.fl_str_mv Revista de Saúde Pública - Universidade de São Paulo (USP)
repository.mail.fl_str_mv revsp@org.usp.br||revsp1@usp.br
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