Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | São Paulo medical journal (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802005000300007 |
Resumo: | CONTEXT AND OBJECTIVE: Diet and nutrition are environmental factors in health/disease relationships. From the epidemiological viewpoint, diet represents a complex set of highly correlated exposures. Our objective was to identify patterns of food intake in a group of individuals living in São Paulo, and to develop objective dietary measurements for epidemiological purposes. DESIGN AND LOCAL: Exploratory factor analysis of data in a case-control study in seven teaching hospitals in São Paulo. METHODS: The participants were 517 patients (260 oral cancer cases and 257 controls) admitted to the study hospitals between November 1998 and March 2001. The weekly intake frequencies for dairy products, cereals, meat, processed meat, vegetables, pulses, fruits and sweets were assessed by means of a semi-quantitative food frequency questionnaire. Dietary patterns were identified by factor analysis, based on the intake of the eight food groups, using principal component analysis as an extraction method followed by varimax rotation. RESULTS: Factor analysis identified three patterns that accounted for 55% of the total variability within the sample. The first pattern ("prudent") was characterized by vegetable, fruit and meat intake; the second ("traditional") by cereals (mainly rice) and pulses (mainly beans); and the third ("snacks") by dairy products and processed meat. CONCLUSION: This study identified food intake patterns through an a posteriori approach. Such analysis may be useful for nutritional intervention programs and, after computing scores for each individual according to the patterns identified, for establishing a relationship between diet and other epidemiological measurements of interest. |
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Identification of dietary patterns using factor analysis in an epidemiological study in São PauloFood habitsDietDiet surveysFeeding behaviorNutritional assessmentCONTEXT AND OBJECTIVE: Diet and nutrition are environmental factors in health/disease relationships. From the epidemiological viewpoint, diet represents a complex set of highly correlated exposures. Our objective was to identify patterns of food intake in a group of individuals living in São Paulo, and to develop objective dietary measurements for epidemiological purposes. DESIGN AND LOCAL: Exploratory factor analysis of data in a case-control study in seven teaching hospitals in São Paulo. METHODS: The participants were 517 patients (260 oral cancer cases and 257 controls) admitted to the study hospitals between November 1998 and March 2001. The weekly intake frequencies for dairy products, cereals, meat, processed meat, vegetables, pulses, fruits and sweets were assessed by means of a semi-quantitative food frequency questionnaire. Dietary patterns were identified by factor analysis, based on the intake of the eight food groups, using principal component analysis as an extraction method followed by varimax rotation. RESULTS: Factor analysis identified three patterns that accounted for 55% of the total variability within the sample. The first pattern ("prudent") was characterized by vegetable, fruit and meat intake; the second ("traditional") by cereals (mainly rice) and pulses (mainly beans); and the third ("snacks") by dairy products and processed meat. CONCLUSION: This study identified food intake patterns through an a posteriori approach. Such analysis may be useful for nutritional intervention programs and, after computing scores for each individual according to the patterns identified, for establishing a relationship between diet and other epidemiological measurements of interest.Associação Paulista de Medicina - APM2005-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802005000300007Sao Paulo Medical Journal v.123 n.3 2005reponame:São Paulo medical journal (Online)instname:Associação Paulista de Medicinainstacron:APM10.1590/S1516-31802005000300007info:eu-repo/semantics/openAccessMarchioni,Dirce Maria LoboLatorre,Maria do Rosário Dias de OliveiraEluf-Neto,JoséWünsch-Filho,VictorFisberg,Regina Maraeng2006-01-20T00:00:00Zoai:scielo:S1516-31802005000300007Revistahttp://www.scielo.br/spmjhttps://old.scielo.br/oai/scielo-oai.phprevistas@apm.org.br1806-94601516-3180opendoar:2006-01-20T00:00São Paulo medical journal (Online) - Associação Paulista de Medicinafalse |
dc.title.none.fl_str_mv |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
title |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
spellingShingle |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo Marchioni,Dirce Maria Lobo Food habits Diet Diet surveys Feeding behavior Nutritional assessment |
title_short |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
title_full |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
title_fullStr |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
title_full_unstemmed |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
title_sort |
Identification of dietary patterns using factor analysis in an epidemiological study in São Paulo |
author |
Marchioni,Dirce Maria Lobo |
author_facet |
Marchioni,Dirce Maria Lobo Latorre,Maria do Rosário Dias de Oliveira Eluf-Neto,José Wünsch-Filho,Victor Fisberg,Regina Mara |
author_role |
author |
author2 |
Latorre,Maria do Rosário Dias de Oliveira Eluf-Neto,José Wünsch-Filho,Victor Fisberg,Regina Mara |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Marchioni,Dirce Maria Lobo Latorre,Maria do Rosário Dias de Oliveira Eluf-Neto,José Wünsch-Filho,Victor Fisberg,Regina Mara |
dc.subject.por.fl_str_mv |
Food habits Diet Diet surveys Feeding behavior Nutritional assessment |
topic |
Food habits Diet Diet surveys Feeding behavior Nutritional assessment |
description |
CONTEXT AND OBJECTIVE: Diet and nutrition are environmental factors in health/disease relationships. From the epidemiological viewpoint, diet represents a complex set of highly correlated exposures. Our objective was to identify patterns of food intake in a group of individuals living in São Paulo, and to develop objective dietary measurements for epidemiological purposes. DESIGN AND LOCAL: Exploratory factor analysis of data in a case-control study in seven teaching hospitals in São Paulo. METHODS: The participants were 517 patients (260 oral cancer cases and 257 controls) admitted to the study hospitals between November 1998 and March 2001. The weekly intake frequencies for dairy products, cereals, meat, processed meat, vegetables, pulses, fruits and sweets were assessed by means of a semi-quantitative food frequency questionnaire. Dietary patterns were identified by factor analysis, based on the intake of the eight food groups, using principal component analysis as an extraction method followed by varimax rotation. RESULTS: Factor analysis identified three patterns that accounted for 55% of the total variability within the sample. The first pattern ("prudent") was characterized by vegetable, fruit and meat intake; the second ("traditional") by cereals (mainly rice) and pulses (mainly beans); and the third ("snacks") by dairy products and processed meat. CONCLUSION: This study identified food intake patterns through an a posteriori approach. Such analysis may be useful for nutritional intervention programs and, after computing scores for each individual according to the patterns identified, for establishing a relationship between diet and other epidemiological measurements of interest. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802005000300007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802005000300007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-31802005000300007 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Paulista de Medicina - APM |
publisher.none.fl_str_mv |
Associação Paulista de Medicina - APM |
dc.source.none.fl_str_mv |
Sao Paulo Medical Journal v.123 n.3 2005 reponame:São Paulo medical journal (Online) instname:Associação Paulista de Medicina instacron:APM |
instname_str |
Associação Paulista de Medicina |
instacron_str |
APM |
institution |
APM |
reponame_str |
São Paulo medical journal (Online) |
collection |
São Paulo medical journal (Online) |
repository.name.fl_str_mv |
São Paulo medical journal (Online) - Associação Paulista de Medicina |
repository.mail.fl_str_mv |
revistas@apm.org.br |
_version_ |
1754209261245693952 |