Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Trends in Psychiatry and Psychotherapy |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-60892012000400007 |
Resumo: | INTRODUCTION: Posttraumatic stress disorder (PTSD) is an anxiety disorder resulting from exposure to traumatic events. The Posttraumatic Stress Disorder Checklist (PCL) is a self-report measure largely used to evaluate the presence of PTSD. OBJECTIVE: To investigate the internal consistency, temporal reliability and factor validity of the Portuguese language version of the PCL used in Brazil. METHODS: A total of 186 participants were recruited. The sample was heterogeneous with regard to occupation, sociodemographic data, mental health history, and exposure to traumatic events. Subjects answered the PCL at two occasions within a 15 days’ interval (range: 5-15 days). RESULTS: Cronbach’s alpha coefficients indicated high internal consistency for the total scale (0.91) and for the theoretical dimensions of the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) (0.83, 0.81, and 0.80). Temporal reliability (test-retest) was high and consistent for different cutoffs. Maximum likelihood exploratory factor analysis (EFA) was conducted and oblique rotation (Promax) was applied. The Kaiser-Meyer-Olkin (KMO) index (0.911) and Bartlett’s test of sphericity (χ² = 1,381.34, p < 0.001) indicated that correlation matrices were suitable for factor analysis. The analysis yielded three symptom clusters which accounted for 48.9% of the variance, namely, intrusions, avoidance, and numbing-hyperarousal. CONCLUSION: Our findings provide additional data regarding the psychometric properties of the PCL, including internal consistency, test-retest reliability, and factor validity. Results are discussed in relation to PTSD theoretical models. |
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Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory studyPosttraumatic stress disordersvalidity of testsreproducibility of resultsstatistical factor analysisINTRODUCTION: Posttraumatic stress disorder (PTSD) is an anxiety disorder resulting from exposure to traumatic events. The Posttraumatic Stress Disorder Checklist (PCL) is a self-report measure largely used to evaluate the presence of PTSD. OBJECTIVE: To investigate the internal consistency, temporal reliability and factor validity of the Portuguese language version of the PCL used in Brazil. METHODS: A total of 186 participants were recruited. The sample was heterogeneous with regard to occupation, sociodemographic data, mental health history, and exposure to traumatic events. Subjects answered the PCL at two occasions within a 15 days’ interval (range: 5-15 days). RESULTS: Cronbach’s alpha coefficients indicated high internal consistency for the total scale (0.91) and for the theoretical dimensions of the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) (0.83, 0.81, and 0.80). Temporal reliability (test-retest) was high and consistent for different cutoffs. Maximum likelihood exploratory factor analysis (EFA) was conducted and oblique rotation (Promax) was applied. The Kaiser-Meyer-Olkin (KMO) index (0.911) and Bartlett’s test of sphericity (χ² = 1,381.34, p < 0.001) indicated that correlation matrices were suitable for factor analysis. The analysis yielded three symptom clusters which accounted for 48.9% of the variance, namely, intrusions, avoidance, and numbing-hyperarousal. CONCLUSION: Our findings provide additional data regarding the psychometric properties of the PCL, including internal consistency, test-retest reliability, and factor validity. Results are discussed in relation to PTSD theoretical models.Associação de Psiquiatria do Rio Grande do Sul2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-60892012000400007Trends in Psychiatry and Psychotherapy v.34 n.4 2012reponame:Trends in Psychiatry and Psychotherapyinstname:Sociedade de Psiquiatria do Rio Grande do Sulinstacron:APRGS10.1590/S2237-60892012000400007info:eu-repo/semantics/openAccessLima,Eduardo de PaulaBarreto,Sandhi MariaAssunção,Ada Ávilaeng2013-01-17T00:00:00Zoai:scielo:S2237-60892012000400007Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=2237-6089&lng=en&nrm=isohttps://old.scielo.br/oai/scielo-oai.phprevista@aprs.org.br|| rodrigo_grassi@terra.com.br2238-00192237-6089opendoar:2013-01-17T00:00Trends in Psychiatry and Psychotherapy - Sociedade de Psiquiatria do Rio Grande do Sulfalse |
dc.title.none.fl_str_mv |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
title |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
spellingShingle |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study Lima,Eduardo de Paula Posttraumatic stress disorders validity of tests reproducibility of results statistical factor analysis |
title_short |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
title_full |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
title_fullStr |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
title_full_unstemmed |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
title_sort |
Factor structure, internal consistency and reliability of the Posttraumatic Stress Disorder Checklist (PCL): an exploratory study |
author |
Lima,Eduardo de Paula |
author_facet |
Lima,Eduardo de Paula Barreto,Sandhi Maria Assunção,Ada Ávila |
author_role |
author |
author2 |
Barreto,Sandhi Maria Assunção,Ada Ávila |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lima,Eduardo de Paula Barreto,Sandhi Maria Assunção,Ada Ávila |
dc.subject.por.fl_str_mv |
Posttraumatic stress disorders validity of tests reproducibility of results statistical factor analysis |
topic |
Posttraumatic stress disorders validity of tests reproducibility of results statistical factor analysis |
description |
INTRODUCTION: Posttraumatic stress disorder (PTSD) is an anxiety disorder resulting from exposure to traumatic events. The Posttraumatic Stress Disorder Checklist (PCL) is a self-report measure largely used to evaluate the presence of PTSD. OBJECTIVE: To investigate the internal consistency, temporal reliability and factor validity of the Portuguese language version of the PCL used in Brazil. METHODS: A total of 186 participants were recruited. The sample was heterogeneous with regard to occupation, sociodemographic data, mental health history, and exposure to traumatic events. Subjects answered the PCL at two occasions within a 15 days’ interval (range: 5-15 days). RESULTS: Cronbach’s alpha coefficients indicated high internal consistency for the total scale (0.91) and for the theoretical dimensions of the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV) (0.83, 0.81, and 0.80). Temporal reliability (test-retest) was high and consistent for different cutoffs. Maximum likelihood exploratory factor analysis (EFA) was conducted and oblique rotation (Promax) was applied. The Kaiser-Meyer-Olkin (KMO) index (0.911) and Bartlett’s test of sphericity (χ² = 1,381.34, p < 0.001) indicated that correlation matrices were suitable for factor analysis. The analysis yielded three symptom clusters which accounted for 48.9% of the variance, namely, intrusions, avoidance, and numbing-hyperarousal. CONCLUSION: Our findings provide additional data regarding the psychometric properties of the PCL, including internal consistency, test-retest reliability, and factor validity. Results are discussed in relation to PTSD theoretical models. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 |
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=S2237-60892012000400007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2237-60892012000400007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S2237-60892012000400007 |
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 de Psiquiatria do Rio Grande do Sul |
publisher.none.fl_str_mv |
Associação de Psiquiatria do Rio Grande do Sul |
dc.source.none.fl_str_mv |
Trends in Psychiatry and Psychotherapy v.34 n.4 2012 reponame:Trends in Psychiatry and Psychotherapy instname:Sociedade de Psiquiatria do Rio Grande do Sul instacron:APRGS |
instname_str |
Sociedade de Psiquiatria do Rio Grande do Sul |
instacron_str |
APRGS |
institution |
APRGS |
reponame_str |
Trends in Psychiatry and Psychotherapy |
collection |
Trends in Psychiatry and Psychotherapy |
repository.name.fl_str_mv |
Trends in Psychiatry and Psychotherapy - Sociedade de Psiquiatria do Rio Grande do Sul |
repository.mail.fl_str_mv |
revista@aprs.org.br|| rodrigo_grassi@terra.com.br |
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1754209280139984896 |