Assessment of participation bias in cohort studies: systematic review and meta-regression analysis
Abstract The proportion of non-participation in cohort studies, if associated with both the exposure and the probability of occurrence of the event, can introduce bias in the estimates of interest. The aim of this study is to evaluate the impact of participation and its characteristics in longitudin...
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Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz
2015-11-01
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doaj-04e3e8b45e50435faa7f69c383e2ad282020-11-24T23:42:36ZengEscola Nacional de Saúde Pública, Fundação Oswaldo CruzCadernos de Saúde Pública1678-44642015-11-0131112259227410.1590/0102-311X00133814S0102-311X2015001302259Assessment of participation bias in cohort studies: systematic review and meta-regression analysisSérgio Henrique Almeida da Silva JuniorSimone M. SantosCláudia Medina CoeliMarilia Sá CarvalhoAbstract The proportion of non-participation in cohort studies, if associated with both the exposure and the probability of occurrence of the event, can introduce bias in the estimates of interest. The aim of this study is to evaluate the impact of participation and its characteristics in longitudinal studies. A systematic review (MEDLINE, Scopus and Web of Science) for articles describing the proportion of participation in the baseline of cohort studies was performed. Among the 2,964 initially identified, 50 were selected. The average proportion of participation was 64.7%. Using a meta-regression model with mixed effects, only age, year of baseline contact and study region (borderline) were associated with participation. Considering the decrease in participation in recent years, and the cost of cohort studies, it is essential to gather information to assess the potential for non-participation, before committing resources. Finally, journals should require the presentation of this information in the papers.http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0102-311X2015001302259&lng=en&tlng=enSesgo de SelecciónEstudios de CohortesMétodos Epidemiológicos |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sérgio Henrique Almeida da Silva Junior Simone M. Santos Cláudia Medina Coeli Marilia Sá Carvalho |
spellingShingle |
Sérgio Henrique Almeida da Silva Junior Simone M. Santos Cláudia Medina Coeli Marilia Sá Carvalho Assessment of participation bias in cohort studies: systematic review and meta-regression analysis Cadernos de Saúde Pública Sesgo de Selección Estudios de Cohortes Métodos Epidemiológicos |
author_facet |
Sérgio Henrique Almeida da Silva Junior Simone M. Santos Cláudia Medina Coeli Marilia Sá Carvalho |
author_sort |
Sérgio Henrique Almeida da Silva Junior |
title |
Assessment of participation bias in cohort studies: systematic review and meta-regression analysis |
title_short |
Assessment of participation bias in cohort studies: systematic review and meta-regression analysis |
title_full |
Assessment of participation bias in cohort studies: systematic review and meta-regression analysis |
title_fullStr |
Assessment of participation bias in cohort studies: systematic review and meta-regression analysis |
title_full_unstemmed |
Assessment of participation bias in cohort studies: systematic review and meta-regression analysis |
title_sort |
assessment of participation bias in cohort studies: systematic review and meta-regression analysis |
publisher |
Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz |
series |
Cadernos de Saúde Pública |
issn |
1678-4464 |
publishDate |
2015-11-01 |
description |
Abstract The proportion of non-participation in cohort studies, if associated with both the exposure and the probability of occurrence of the event, can introduce bias in the estimates of interest. The aim of this study is to evaluate the impact of participation and its characteristics in longitudinal studies. A systematic review (MEDLINE, Scopus and Web of Science) for articles describing the proportion of participation in the baseline of cohort studies was performed. Among the 2,964 initially identified, 50 were selected. The average proportion of participation was 64.7%. Using a meta-regression model with mixed effects, only age, year of baseline contact and study region (borderline) were associated with participation. Considering the decrease in participation in recent years, and the cost of cohort studies, it is essential to gather information to assess the potential for non-participation, before committing resources. Finally, journals should require the presentation of this information in the papers. |
topic |
Sesgo de Selección Estudios de Cohortes Métodos Epidemiológicos |
url |
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0102-311X2015001302259&lng=en&tlng=en |
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