Design and validation of a job-exposure matrix to silica

Detalhes bibliográficos
Autor(a) principal: Ribeiro, Fátima Sueli Neto
Data de Publicação: 2005
Outros Autores: Camargo, Esther Archer de, Wünsch Filho, Victor
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista de Saúde Pública
Texto Completo: https://www.revistas.usp.br/rsp/article/view/31828
Resumo: OBJECTIVE: To develop a population-based matrix of job-exposure to crystalline silica in Brazil and to estimate its validity. METHODS: An epidemiologist and an industrial hygienist developed a matrix of job-exposure in four stages: coding of occupation variable; coding of industry variable; consensual exposure classification between researchers; and estimate of registered workforce in 1995 for each level of exposure. The cross-tabulation of the variables industry (25 columns) and occupation (347 lines) resulted in 8,675 cells, classified according to silica exposure in four levels: non-exposed, possibly exposed, probably exposed, and definitively exposed. For validating the job-exposure matrix, five industries (mining and quarrying, construction, foundry, management of technical personal and textiles), were re-coded according to exposure by external experts. Reliability of the study and external experts was evaluated by agreement measured using kappa analysis. RESULTS: The job-exposure matrix showed high coding agreement, ranging from 64.0% for foundry to 94.0% for mining. Kappa analysis showed good agreement in mining (0.9), and low or average for other sectors (ranging from 0.1 to 0.5). High specificity was found in foundry (86.5%) and mining (100.0%). Construction had 56% specificity. CONCLUSIONS: The study job-exposure matrix showed good accuracy and seems to be appropriate for estimating silica exposure among Brazilian workers.
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spelling Design and validation of a job-exposure matrix to silica Delineamento e validação de matriz de exposição ocupacional à sílica Sílica livrePoluentes do arExposição ocupacionalValidadeMatriz de exposição ocupacionalavaliaçãoconfiabilidadeFree silicaAir pollutantsOccupational exposureValidityJob-exposure matrixassessmentReliability OBJECTIVE: To develop a population-based matrix of job-exposure to crystalline silica in Brazil and to estimate its validity. METHODS: An epidemiologist and an industrial hygienist developed a matrix of job-exposure in four stages: coding of occupation variable; coding of industry variable; consensual exposure classification between researchers; and estimate of registered workforce in 1995 for each level of exposure. The cross-tabulation of the variables industry (25 columns) and occupation (347 lines) resulted in 8,675 cells, classified according to silica exposure in four levels: non-exposed, possibly exposed, probably exposed, and definitively exposed. For validating the job-exposure matrix, five industries (mining and quarrying, construction, foundry, management of technical personal and textiles), were re-coded according to exposure by external experts. Reliability of the study and external experts was evaluated by agreement measured using kappa analysis. RESULTS: The job-exposure matrix showed high coding agreement, ranging from 64.0% for foundry to 94.0% for mining. Kappa analysis showed good agreement in mining (0.9), and low or average for other sectors (ranging from 0.1 to 0.5). High specificity was found in foundry (86.5%) and mining (100.0%). Construction had 56% specificity. CONCLUSIONS: The study job-exposure matrix showed good accuracy and seems to be appropriate for estimating silica exposure among Brazilian workers. OBJETIVO: Desenvolver matriz de exposição ocupacional de base populacional para a sílica cristalina no Brasil e estimar sua validade. MÉTODOS: A matriz de exposição ocupacional foi desenvolvida por um epidemiologista e um higienista ocupacional em quatro etapas: a) codificação da variável ocupação; b) codificação da variável setor econômico; c) classificação da exposição por consenso entre os pesquisadores e; d) estimativa do número de trabalhadores registrados, em 1995, para cada nível de exposição. As 8.675 células da matriz, formadas pela intersecção das variáveis setor econômico (25 colunas) e ocupação (347 linhas), foram classificadas de acordo com a freqüência da exposição à sílica em quatro níveis: não expostos, possivelmente expostos, provavelmente expostos e definitivamente expostos. Para a validação da matriz de exposição ocupacional, cinco setores econômicos (extração mineral, construção civil, metalurgia, administração de serviços de pessoal técnico e indústria têxtil) foram re-codificados quanto à exposição por peritos convidados. Avaliou-se a confiabilidade pela proporção de acordos e o grau de concordância pelo Kappa. RESULTADOS: A matriz de exposição ocupacional apresentou alta concordância geral, variando de 64,0% na metalurgia a 94,4% na extração mineral. O Kappa revelou boa concordância no setor de extração mineral (0,9) e baixa ou regular nos demais (variação de 0,1 a 0,5). A especificidade foi alta para os setores de metalurgia (86,5%) e extração mineral (100,0%). A construção civil apresentou especificidade de 56,0%. CONCLUSÕES: A matriz de exposição ocupacional apresentou boa acurácia, revelando-se adequada para estimar a exposição à sílica na força de trabalho ocupada no País. Universidade de São Paulo. Faculdade de Saúde Pública2005-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rsp/article/view/3182810.1590/S0034-89102005000100003Revista de Saúde Pública; Vol. 39 No. 1 (2005); 18-26 Revista de Saúde Pública; Vol. 39 Núm. 1 (2005); 18-26 Revista de Saúde Pública; v. 39 n. 1 (2005); 18-26 1518-87870034-8910reponame:Revista de Saúde Públicainstname:Universidade de São Paulo (USP)instacron:USPporhttps://www.revistas.usp.br/rsp/article/view/31828/33768Copyright (c) 2017 Revista de Saúde Públicainfo:eu-repo/semantics/openAccessRibeiro, Fátima Sueli NetoCamargo, Esther Archer deWünsch Filho, Victor2012-07-08T22:31:31Zoai:revistas.usp.br:article/31828Revistahttps://www.revistas.usp.br/rsp/indexONGhttps://www.revistas.usp.br/rsp/oairevsp@org.usp.br||revsp1@usp.br1518-87870034-8910opendoar:2012-07-08T22:31:31Revista de Saúde Pública - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Design and validation of a job-exposure matrix to silica
Delineamento e validação de matriz de exposição ocupacional à sílica
title Design and validation of a job-exposure matrix to silica
spellingShingle Design and validation of a job-exposure matrix to silica
Ribeiro, Fátima Sueli Neto
Sílica livre
Poluentes do ar
Exposição ocupacional
Validade
Matriz de exposição ocupacional
avaliação
confiabilidade
Free silica
Air pollutants
Occupational exposure
Validity
Job-exposure matrix
assessment
Reliability
title_short Design and validation of a job-exposure matrix to silica
title_full Design and validation of a job-exposure matrix to silica
title_fullStr Design and validation of a job-exposure matrix to silica
title_full_unstemmed Design and validation of a job-exposure matrix to silica
title_sort Design and validation of a job-exposure matrix to silica
author Ribeiro, Fátima Sueli Neto
author_facet Ribeiro, Fátima Sueli Neto
Camargo, Esther Archer de
Wünsch Filho, Victor
author_role author
author2 Camargo, Esther Archer de
Wünsch Filho, Victor
author2_role author
author
dc.contributor.author.fl_str_mv Ribeiro, Fátima Sueli Neto
Camargo, Esther Archer de
Wünsch Filho, Victor
dc.subject.por.fl_str_mv Sílica livre
Poluentes do ar
Exposição ocupacional
Validade
Matriz de exposição ocupacional
avaliação
confiabilidade
Free silica
Air pollutants
Occupational exposure
Validity
Job-exposure matrix
assessment
Reliability
topic Sílica livre
Poluentes do ar
Exposição ocupacional
Validade
Matriz de exposição ocupacional
avaliação
confiabilidade
Free silica
Air pollutants
Occupational exposure
Validity
Job-exposure matrix
assessment
Reliability
description OBJECTIVE: To develop a population-based matrix of job-exposure to crystalline silica in Brazil and to estimate its validity. METHODS: An epidemiologist and an industrial hygienist developed a matrix of job-exposure in four stages: coding of occupation variable; coding of industry variable; consensual exposure classification between researchers; and estimate of registered workforce in 1995 for each level of exposure. The cross-tabulation of the variables industry (25 columns) and occupation (347 lines) resulted in 8,675 cells, classified according to silica exposure in four levels: non-exposed, possibly exposed, probably exposed, and definitively exposed. For validating the job-exposure matrix, five industries (mining and quarrying, construction, foundry, management of technical personal and textiles), were re-coded according to exposure by external experts. Reliability of the study and external experts was evaluated by agreement measured using kappa analysis. RESULTS: The job-exposure matrix showed high coding agreement, ranging from 64.0% for foundry to 94.0% for mining. Kappa analysis showed good agreement in mining (0.9), and low or average for other sectors (ranging from 0.1 to 0.5). High specificity was found in foundry (86.5%) and mining (100.0%). Construction had 56% specificity. CONCLUSIONS: The study job-exposure matrix showed good accuracy and seems to be appropriate for estimating silica exposure among Brazilian workers.
publishDate 2005
dc.date.none.fl_str_mv 2005-01-01
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/31828
10.1590/S0034-89102005000100003
url https://www.revistas.usp.br/rsp/article/view/31828
identifier_str_mv 10.1590/S0034-89102005000100003
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://www.revistas.usp.br/rsp/article/view/31828/33768
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. 39 No. 1 (2005); 18-26
Revista de Saúde Pública; Vol. 39 Núm. 1 (2005); 18-26
Revista de Saúde Pública; v. 39 n. 1 (2005); 18-26
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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