Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance

Detalhes bibliográficos
Autor(a) principal: Schmidt, Wolf Peter
Data de Publicação: 2007
Outros Autores: Luby, Stephen P., Genser, Bernd, Barreto, Mauricio Lima, Clasen, Thomas
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14388
Resumo: Texto completo: acesso restrito. p. 537-543
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spelling Schmidt, Wolf PeterLuby, Stephen P.Genser, BerndBarreto, Mauricio LimaClasen, ThomasSchmidt, Wolf PeterLuby, Stephen P.Genser, BerndBarreto, Mauricio LimaClasen, Thomas2014-01-20T14:45:13Z20071044-3983http://repositorio.ufba.br/ri/handle/ri/14388v. 18, n. 5Texto completo: acesso restrito. p. 537-543Background: Longitudinal prevalence (ie, the proportion of time with the disease) is used to describe morbidity from diarrhea and other episodic conditions. The aim of this analysis was to compare estimates of longitudinal prevalence based on intermittent sampling at regular intervals with 24- or 48-hour recall, with estimates based on continuous surveillance. Methods: Based on 2 real datasets from Brazil and Guatemala, we developed a simulated dataset representing the diarrhea morbidity of 10,000 individuals followed over 365 days. Results: Both the model and the real datasets showed that the standard deviation of the longitudinal prevalence increases with decreasing numbers of days sampled, so that a study sampling only a fraction of days would require a larger sample size. However, due to the correlation of diarrhea between consecutive days, sampling at 7- to 14-day intervals results in relatively small loss of precision and power compared with daily morbidity records, especially when the average diarrheal episode is long. A study based on morbidity data for every seventh day may require only a 5%-24% larger sample size than a study with daily records, depending on the average duration of episodes. Using a recall period of 48 hours instead of 24 hours increases power if the average episode is short. Conclusions: The results question the necessity of continuous surveillance to estimate longitudinal prevalence. In addition to savings in cost and staff time, intermittent sampling of morbidity may improve validity by minimizing recall error and reducing the influence of surveillance on participants' behavior.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-20T14:45:13Z No. of bitstreams: 1 00001648-200709000-00003.pdf: 786188 bytes, checksum: a3bc2974bccdf376a4cb46c49a7fba1d (MD5)Made available in DSpace on 2014-01-20T14:45:13Z (GMT). No. of bitstreams: 1 00001648-200709000-00003.pdf: 786188 bytes, checksum: a3bc2974bccdf376a4cb46c49a7fba1d (MD5) Previous issue date: 2007http://dx.doi.org/10.1097/EDE.0b013e318093f3cereponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAEstimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillanceEpidemiologyinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL00001648-200709000-00003.pdf00001648-200709000-00003.pdfapplication/pdf786188https://repositorio.ufba.br/bitstream/ri/14388/1/00001648-200709000-00003.pdfa3bc2974bccdf376a4cb46c49a7fba1dMD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14388/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXT00001648-200709000-00003.pdf.txt00001648-200709000-00003.pdf.txtExtracted texttext/plain33180https://repositorio.ufba.br/bitstream/ri/14388/3/00001648-200709000-00003.pdf.txt2ebd5854cc5eb73f87b832f00656cc82MD53ri/143882022-07-05 14:03:52.292oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:52Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
dc.title.alternative.pt_BR.fl_str_mv Epidemiology
title Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
spellingShingle Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
Schmidt, Wolf Peter
title_short Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
title_full Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
title_fullStr Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
title_full_unstemmed Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
title_sort Estimating the longitudinal prevalence of diarrhea and other episodic diseases: continuous versus intermittent surveillance
author Schmidt, Wolf Peter
author_facet Schmidt, Wolf Peter
Luby, Stephen P.
Genser, Bernd
Barreto, Mauricio Lima
Clasen, Thomas
author_role author
author2 Luby, Stephen P.
Genser, Bernd
Barreto, Mauricio Lima
Clasen, Thomas
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Schmidt, Wolf Peter
Luby, Stephen P.
Genser, Bernd
Barreto, Mauricio Lima
Clasen, Thomas
Schmidt, Wolf Peter
Luby, Stephen P.
Genser, Bernd
Barreto, Mauricio Lima
Clasen, Thomas
description Texto completo: acesso restrito. p. 537-543
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-01-20T14:45:13Z
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dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/14388
dc.identifier.issn.none.fl_str_mv 1044-3983
dc.identifier.number.pt_BR.fl_str_mv v. 18, n. 5
identifier_str_mv 1044-3983
v. 18, n. 5
url http://repositorio.ufba.br/ri/handle/ri/14388
dc.language.iso.fl_str_mv eng
language eng
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