Show simple item record

dc.contributor.authorGelaye, Bizuen_US
dc.contributor.authorLohsoonthorn, Vitoolen_US
dc.contributor.authorLertmeharit, Somraten_US
dc.contributor.authorPensuksan, Wipawan C.en_US
dc.contributor.authorSanchez, Sixto E.en_US
dc.contributor.authorLemma, Seblewengelen_US
dc.contributor.authorBerhane, Yemaneen_US
dc.contributor.authorZhu, Xiaotongen_US
dc.contributor.authorVélez, Juan Carlosen_US
dc.contributor.authorBarbosa, Claritaen_US
dc.contributor.authorAnderade, Asterioen_US
dc.contributor.authorTadesse, Mahlet G.en_US
dc.contributor.authorWilliams, Michelle A.en_US
dc.date.accessioned2015-02-02T15:32:04Z
dc.date.issued2014en_US
dc.identifier.citationGelaye, B., V. Lohsoonthorn, S. Lertmeharit, W. C. Pensuksan, S. E. Sanchez, S. Lemma, Y. Berhane, et al. 2014. “Construct Validity and Factor Structure of the Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale in a Multi-National Study of African, South East Asian and South American College Students.” PLoS ONE 9 (12): e116383. doi:10.1371/journal.pone.0116383. http://dx.doi.org/10.1371/journal.pone.0116383.en
dc.identifier.issn1932-6203en
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:13890640
dc.description.abstractBackground: The Pittsburgh Sleep Quality Index (PSQI) and the Epworth Sleepiness Scale (ESS) are questionnaires used to assess sleep quality and excessive daytime sleepiness in clinical and population-based studies. The present study aimed to evaluate the construct validity and factor structure of the PSQI and ESS questionnaires among young adults in four countries (Chile, Ethiopia, Peru and Thailand). Methods: A cross-sectional study was conducted among 8,481 undergraduate students. Students were invited to complete a self-administered questionnaire that collected information about lifestyle, demographic, and sleep characteristics. In each country, the construct validity and factorial structures of PSQI and ESS questionnaires were tested through exploratory and confirmatory factor analyses (EFA and CFA). Results: The largest component-total correlation coefficient for sleep quality as assessed using PSQI was noted in Chile (r = 0.71) while the smallest component-total correlation coefficient was noted for sleep medication use in Peru (r = 0.28). The largest component-total correlation coefficient for excessive daytime sleepiness as assessed using ESS was found for item 1 (sitting/reading) in Chile (r = 0.65) while the lowest item-total correlation was observed for item 6 (sitting and talking to someone) in Thailand (r = 0.35). Using both EFA and CFA a two-factor model was found for PSQI questionnaire in Chile, Ethiopia and Thailand while a three-factor model was found for Peru. For the ESS questionnaire, we noted two factors for all four countries Conclusion: Overall, we documented cross-cultural comparability of sleep quality and excessive daytime sleepiness measures using the PSQI and ESS questionnaires among Asian, South American and African young adults. Although both the PSQI and ESS were originally developed as single-factor questionnaires, the results of our EFA and CFA revealed the multi- dimensionality of the scales suggesting limited usefulness of the global PSQI and ESS scores to assess sleep quality and excessive daytime sleepiness.en
dc.language.isoen_USen
dc.publisherPublic Library of Scienceen
dc.relation.isversionofdoi:10.1371/journal.pone.0116383en
dc.relation.hasversionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4281247/pdf/en
dash.licenseLAAen_US
dc.subjectBiology and Life Sciencesen
dc.subjectPsychologyen
dc.subjectPsychometricsen
dc.subjectMedicine and Health Sciencesen
dc.subjectNeurologyen
dc.subjectSleep Disordersen
dc.subjectPublic and Occupational Healthen
dc.subjectGlobal Healthen
dc.subjectPeople and Placesen
dc.subjectPopulation Groupingsen
dc.subjectAge Groupsen
dc.subjectYoung Adultsen
dc.subjectSocial Sciencesen
dc.titleConstruct Validity and Factor Structure of the Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale in a Multi-National Study of African, South East Asian and South American College Studentsen
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden
dc.relation.journalPLoS ONEen
dash.depositing.authorGelaye, Bizuen_US
dc.date.available2015-02-02T15:32:04Z
dc.identifier.doi10.1371/journal.pone.0116383*
dash.authorsorderedfalse
dash.contributor.affiliatedGelaye, Bizu
dash.contributor.affiliatedTadesse, Mahlet Getachew
dash.contributor.affiliatedWilliams, Michelle
dc.identifier.orcid0000-0001-5807-5281


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record