Study in length of children born in Pelotas, Rio Grande do Sul, Brazil, in 1982: metodology and preliminary results
Autor(a) principal: | |
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Data de Publicação: | 1985 |
Outros Autores: | , , , |
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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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 |
format |
article |
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 |
_version_ |
1800221772471074816 |