Questionário de Pittsburgh sobre a Qualidade do Sono [PSQI em Português Europeu (EP) ou Português de Portugal]
Questionário de Pittsburgh sobre a Qualidade do Sono [PSQI em Português Europeu (EP) ou Português de Portugal]Original Version
Buysse et al. (1989)Portuguese Version
Mapi Research Institute (2008), and Gomes et al. (2018)General Description
The Pittsburgh Sleep Quality Index (PSQI) is a self-response questionnaire developed by Buysse et al. (1989), originally to discriminate between “good” and “poor” adult sleepers. Both for clinical and non-clinical applications, it may help to identify the main areas in which sleep may (or may not) be disturbed.
The PSQI has been translated into several languages, and there is more than one Portuguese version. The one mentioned here is the MAPI Institute “Portuguese for Portugal” translation indicated by the University of Pittsburgh, which was validated to Portugal by Gomes et al. (2018) including reliability, validity, norming (M +/- SD by age group, sex, and clinical vs. non-clinical group), and clinical accuracy (i.e., sensitivity and specificity) studies.
The PSQI consists of 19 items (plus 5 clinically relevant questions not considered for scoring purposes), which are distributed into seven “components”: subjective sleep quality; sleep latency; sleep duration; habitual sleep efficiency; sleep disturbances; use of sleeping medication; day-time dysfunction. Each component is scored from 0 a 2, and the sum of the component scores yields a global PSQI score.
According to Buysse et al. (1989), an overall score of 6 points or higher may be used to identify poor sleepers. The Portuguese validation study of Gomes et al. (2018) has confirmed this cut-off point was suitable for the European Portuguese version too and, in addition, has found an optimal cut-off point to discriminate between non-clinical and clinical sleep patients of 8 points or higher.
Gomes, A.A., Marques, D.R., Meiavia, A.M., Cunha, F., & Clemente, V. (2018). Psychometric properties and accuracy of the European Portuguese version of the Pittsburgh Sleep Quality Index in clinical and non-clinical samples. Sleep and Biological Rhythms, 16, 413–422. https://doi.org/10.1007/s41105-018-0171-9
_ Link (Estudo geral): http://hdl.handle.net/10316/95687
Marques, D.R., Gomes, A.A., Meiavia, A., Salgueiro, A., Ribeiro, C. C., & Dischler, J. (2013). Reliability and initial validation of the Pittsburgh Sleep Quality Index, European Portuguese version: A preliminary study in a sample of higher education students. Sleep Medicine, 14 (s1), e140. http://dx.doi.org/10.1016/j.sleep.2013.11.316
_ Link (Estudo geral): http://hdl.handle.net/10316/47422
Mapi Research Institute (2008). Questionário de Pittsburgh sobre a Qualidade do Sono. PQSI—Portugal/Portuguese—Version of 18 Sep 08 [ID4842/PSQI_AU1.0_por-PT.doc]. Mapi Research Trust.
_ Link (Página externa): https://eprovide.mapi-trust.org/instruments/pittsburgh-sleep-quality-index#languages
Buysse, D. J., Reynolds, C. F., 3rd, Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989). The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry research, 28(2), 193–213. https://doi.org/10.1016/0165-1781(89)90047-4
Note: To obtain permission for certain types of use you may have to contact the Mapi Research Trust, https://eprovide.mapi-trust.org/instruments/pittsburgh-sleep-quality-index , or the University of Pittsburgh Center for Sleep and Circadian Science, https://www.sleep.pitt.edu/instruments/