Psychometric properties of the Brazilian version of the Pittsburgh Sleep Quality Index Addendum for PTSD (PSQI-A)

Psychometric properties of the Brazilian version of the Pittsburgh Sleep Quality Index Addendum for PTSD (PSQI-A)

Author Barbosa Neto, Jair B. Google Scholar
Germain, Anne Google Scholar
Mattos, Patrícia F. Google Scholar
Serafim, Paula M. Google Scholar
Santos, Roberta C.m. Google Scholar
Martini, Larissa Campagna Autor UNIFESP Google Scholar
Suchecki, Deborah Autor UNIFESP Google Scholar
Mello, Marcelo Feijó de Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
University of Pittsburgh School of Medicine Department of Psychiatry
Abstract Objective: Sleep disturbances play a fundamental role in the pathophysiology posttraumatic stress disorder (PTSD), and are not only a secondary feature. The aim of this study was to validate and assess the psychometric properties of the Brazilian version of the Pittsburgh Sleep Quality Index Addendum for PTSD (PSQI-A-BR), a self-report instrument designed to assess the frequency of seven disruptive nocturnal behaviors, in a sample of participants with and without PTSD. Methods: PSQI-A was translated into Brazilian Portuguese and applied to a convenience sample of 190 volunteers, with and without PTSD, who had sought treatment for the consequences of a traumatic event. Results: The PSQI-A-BR displayed satisfactory internal consistency (Cronbach's coefficient of 0.83 between all items) and convergent validity with the Clinician Administered PTSD Scale (CAPS), even when excluding sleep-related items (r = 0.52). Test-retest yielded high agreement in the global PSQI-A-BR, with good stability over time (r = 0.88). A global PSQI-A-BR cutoff score of 7 yielded a sensitivity of 79%, specificity of 64%, and a global score of 7 yielded a positive predictive value of 93% for discriminating participants with PTSD from those without PTSD. Conclusion: The PSQI-A-BR is a valid instrument for PTSD assessment, applicable to both clinical and research settings.
Keywords Sleep
posttraumatic stress disorder
tests/interviews, psychometric
stress
dreams
Language English
Date 2014-12-01
Published in Revista Brasileira de Psiquiatria. Associação Brasileira de Psiquiatria - ABP, v. 36, n. 4, p. 330-335, 2014.
ISSN 1516-4446 (Sherpa/Romeo)
Publisher Associação Brasileira de Psiquiatria - ABP
Extent 330-335
Origin http://dx.doi.org/10.1590/1516-4446-2013-1225
Access rights Open access Open Access
Type Article
SciELO ID S1516-44462014000500330 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/8664

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