Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index
The purpose of the present study is to determine the reliability and factorial validity of a Portuguese version of the Pittsburgh Sleep Quality Index - PSQI (Buysse, Reynolds III, Monk, Berman, & Kupfer, 1989). Methods: A random sample of 252 children (113 girls; 139 boys) attending the seconda...
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Psychtech & health journal
2020-07-01
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| Series: | PsychTech & Health Journal |
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| Online Access: | http://www.psychtech-journal.com/index.php/psychTech/article/view/6 |
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| author | C. M. Teixeira A. Caçador T. M. Ferreira José Vasconcelos-Raposo |
| author_facet | C. M. Teixeira A. Caçador T. M. Ferreira José Vasconcelos-Raposo |
| author_sort | C. M. Teixeira |
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The purpose of the present study is to determine the reliability and factorial validity of a Portuguese version of the Pittsburgh Sleep Quality Index - PSQI (Buysse, Reynolds III, Monk, Berman, & Kupfer, 1989). Methods: A random sample of 252 children (113 girls; 139 boys) attending the secondary school, with an average age of 15.27 years (SD = 1.925) that completed the Portuguese PSQI (P-PSQI). The factor structure of the data was evaluated using confirmatory factor analysis. Results: Once the “use of sleep medication” component was removed from the model a good overall fit to the data was found (χ2/df = 1.194, GFI = .983, AGFI = .959, CFI = .980, RMSEA = .029 [.001- .076] AICsat = 42.0). These results confirm the theoretical strength of PSQI; however, we were unable to confirm the seven-factor structure proposed in the original version. Conclusions: The PSQI-P has good psychometric properties and is suitable for use in nomothetic research on sleep quality in Portuguese adolescents.
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| format | Article |
| id | doaj-art-5f36db1501bc4041ba60c8f8fb5ec522 |
| institution | Kabale University |
| issn | 2184-1004 |
| language | English |
| publishDate | 2020-07-01 |
| publisher | Psychtech & health journal |
| record_format | Article |
| series | PsychTech & Health Journal |
| spelling | doaj-art-5f36db1501bc4041ba60c8f8fb5ec5222025-02-02T21:27:30ZengPsychtech & health journalPsychTech & Health Journal2184-10042020-07-011210.26580/PTHJ.art6.2018Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality IndexC. M. Teixeira0A. Caçador1T. M. Ferreira2José Vasconcelos-RaposoDept. Educação e Psicologia, Universidade de Trás-os-Montes e Alto Douro, Vila Real, PortugalDept. Educação e Psicologia, Universidade do Porto, Porto, PortugalDept. Educação e Psicologia, Universidade de Aveiro, Aveiro, Portugal The purpose of the present study is to determine the reliability and factorial validity of a Portuguese version of the Pittsburgh Sleep Quality Index - PSQI (Buysse, Reynolds III, Monk, Berman, & Kupfer, 1989). Methods: A random sample of 252 children (113 girls; 139 boys) attending the secondary school, with an average age of 15.27 years (SD = 1.925) that completed the Portuguese PSQI (P-PSQI). The factor structure of the data was evaluated using confirmatory factor analysis. Results: Once the “use of sleep medication” component was removed from the model a good overall fit to the data was found (χ2/df = 1.194, GFI = .983, AGFI = .959, CFI = .980, RMSEA = .029 [.001- .076] AICsat = 42.0). These results confirm the theoretical strength of PSQI; however, we were unable to confirm the seven-factor structure proposed in the original version. Conclusions: The PSQI-P has good psychometric properties and is suitable for use in nomothetic research on sleep quality in Portuguese adolescents. http://www.psychtech-journal.com/index.php/psychTech/article/view/6psychometricssleepadolescentsPSQIvalidity |
| spellingShingle | C. M. Teixeira A. Caçador T. M. Ferreira José Vasconcelos-Raposo Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index PsychTech & Health Journal psychometrics sleep adolescents PSQI validity |
| title | Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index |
| title_full | Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index |
| title_fullStr | Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index |
| title_full_unstemmed | Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index |
| title_short | Confirmatory Factor Analysis of a Portuguese Version of the Pittsburgh Sleep Quality Index |
| title_sort | confirmatory factor analysis of a portuguese version of the pittsburgh sleep quality index |
| topic | psychometrics sleep adolescents PSQI validity |
| url | http://www.psychtech-journal.com/index.php/psychTech/article/view/6 |
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