The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17)
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Psychiatry (São Paulo. 1999. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-44462013000400360 |
Resumo: | Objective: To use principal component analysis (PCA) to test the hypothesis that the items of the Hamilton Depression Scale (HAM-D17) have been selected to reflect depression disability, whereas some of the items are specific for sub-typing depression into typical vs. atypical depression. Method: Our previous study using exploratory factor analysis on HAM-D17 has been re-analyzed with PCA and the results have been compared to a dataset from another randomized prospective study. Results: PCA showed that the first principal component was a general factor covering depression disability with factor loadings very similar to those obtained in the STAR*D study. The second principal component was a bi-directional factor contrasting typical vs. atypical depression symptoms. Varimax rotation gave no new insight into the factor structure of HAM-D17. Conclusion: With scales like the HAM-D17, it is very important to make a proper clinical interpretation of the PCA before attempting any form of exploratory factor analysis. For the HAM-D17, our results indicate that profile scores are needed because the total score of all 17 items in the HAM-D17 does not give sufficient information. |
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Brazilian Journal of Psychiatry (São Paulo. 1999. Online) |
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The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17)Hamilton Depression Scaleprincipal component analysisexploratory factor analysis Objective: To use principal component analysis (PCA) to test the hypothesis that the items of the Hamilton Depression Scale (HAM-D17) have been selected to reflect depression disability, whereas some of the items are specific for sub-typing depression into typical vs. atypical depression. Method: Our previous study using exploratory factor analysis on HAM-D17 has been re-analyzed with PCA and the results have been compared to a dataset from another randomized prospective study. Results: PCA showed that the first principal component was a general factor covering depression disability with factor loadings very similar to those obtained in the STAR*D study. The second principal component was a bi-directional factor contrasting typical vs. atypical depression symptoms. Varimax rotation gave no new insight into the factor structure of HAM-D17. Conclusion: With scales like the HAM-D17, it is very important to make a proper clinical interpretation of the PCA before attempting any form of exploratory factor analysis. For the HAM-D17, our results indicate that profile scores are needed because the total score of all 17 items in the HAM-D17 does not give sufficient information. Associação Brasileira de Psiquiatria2013-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-44462013000400360Brazilian Journal of Psychiatry v.35 n.4 2013reponame:Brazilian Journal of Psychiatry (São Paulo. 1999. Online)instname:Associação Brasileira de Psiquiatria (ABP)instacron:ABP10.1590/1516-4446-2013-1116info:eu-repo/semantics/openAccessBech,PerCsillag,ClaudioHellström,LoneFleck,Marcelo Pio de Almeidaeng2014-09-26T00:00:00Zoai:scielo:S1516-44462013000400360Revistahttp://www.bjp.org.br/ahead_of_print.asphttps://old.scielo.br/oai/scielo-oai.php||rbp@abpbrasil.org.br1809-452X1516-4446opendoar:2014-09-26T00:00Brazilian Journal of Psychiatry (São Paulo. 1999. Online) - Associação Brasileira de Psiquiatria (ABP)false |
dc.title.none.fl_str_mv |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
title |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
spellingShingle |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) Bech,Per Hamilton Depression Scale principal component analysis exploratory factor analysis |
title_short |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
title_full |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
title_fullStr |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
title_full_unstemmed |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
title_sort |
The time has come to stop rotations for the identification of structures in the Hamilton Depression Scale (HAM-D17) |
author |
Bech,Per |
author_facet |
Bech,Per Csillag,Claudio Hellström,Lone Fleck,Marcelo Pio de Almeida |
author_role |
author |
author2 |
Csillag,Claudio Hellström,Lone Fleck,Marcelo Pio de Almeida |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Bech,Per Csillag,Claudio Hellström,Lone Fleck,Marcelo Pio de Almeida |
dc.subject.por.fl_str_mv |
Hamilton Depression Scale principal component analysis exploratory factor analysis |
topic |
Hamilton Depression Scale principal component analysis exploratory factor analysis |
description |
Objective: To use principal component analysis (PCA) to test the hypothesis that the items of the Hamilton Depression Scale (HAM-D17) have been selected to reflect depression disability, whereas some of the items are specific for sub-typing depression into typical vs. atypical depression. Method: Our previous study using exploratory factor analysis on HAM-D17 has been re-analyzed with PCA and the results have been compared to a dataset from another randomized prospective study. Results: PCA showed that the first principal component was a general factor covering depression disability with factor loadings very similar to those obtained in the STAR*D study. The second principal component was a bi-directional factor contrasting typical vs. atypical depression symptoms. Varimax rotation gave no new insight into the factor structure of HAM-D17. Conclusion: With scales like the HAM-D17, it is very important to make a proper clinical interpretation of the PCA before attempting any form of exploratory factor analysis. For the HAM-D17, our results indicate that profile scores are needed because the total score of all 17 items in the HAM-D17 does not give sufficient information. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12-01 |
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=S1516-44462013000400360 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-44462013000400360 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1516-4446-2013-1116 |
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 Brasileira de Psiquiatria |
publisher.none.fl_str_mv |
Associação Brasileira de Psiquiatria |
dc.source.none.fl_str_mv |
Brazilian Journal of Psychiatry v.35 n.4 2013 reponame:Brazilian Journal of Psychiatry (São Paulo. 1999. Online) instname:Associação Brasileira de Psiquiatria (ABP) instacron:ABP |
instname_str |
Associação Brasileira de Psiquiatria (ABP) |
instacron_str |
ABP |
institution |
ABP |
reponame_str |
Brazilian Journal of Psychiatry (São Paulo. 1999. Online) |
collection |
Brazilian Journal of Psychiatry (São Paulo. 1999. Online) |
repository.name.fl_str_mv |
Brazilian Journal of Psychiatry (São Paulo. 1999. Online) - Associação Brasileira de Psiquiatria (ABP) |
repository.mail.fl_str_mv |
||rbp@abpbrasil.org.br |
_version_ |
1754212556024578048 |