Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil

dc.contributoren-US
dc.creatorMartinez, Denis
dc.creatorda Silva, Roberto Pacheco
dc.creatorCassol, Cristiane Maria
dc.creatorPires, Gabriel Natan
dc.date2015-12-28
dc.date.accessioned2018-11-07T18:53:46Z
dc.date.available2018-11-07T18:53:46Z
dc.identifierhttps://seer.ufrgs.br/hcpa/article/view/59646
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/2174776
dc.descriptionIntroduction: Seasonal affective disorder (SAD) is a proposed mental disorder still controversial. This condition is prevalent in northern latitudes, but few studies have been conducted at locations in the southern hemisphere. It is usually assessed by the Seasonal Pattern Assessment Questionnaire (SPAQ). This study aimed to evaluate, through on-line questionnaire, the hypothesis that, in the Brazilian population, latitude and longitude influence SPAQ scores.Methods: An advertisement was posted on a sleep medicine website inviting visitors to investigate seasonal patterns of behavior and mood, using a Brazilian Portuguese version of the SPAQ. The geographic coordinates of the place of residence of each respondent were analyzed as a continuous variable or distributed in quartiles of latitude and longitude. The psychometric properties of the SPAQ were assessed by reliability and factor analyses.Results: Answers from 1001 respondents out of 1045 were considered eligible. High SPAQ scores were observed in 287 respondents, equally distributed among all latitude and longitude quartiles. Data collected in different seasons and during daylight saving time did not differ significantly in any of the scores for SPAQ dimensions. No correlations between SPAQ scores and latitude or longitude were observed. Psychometric properties of the SPAQ were preserved in all geographic locations.Conclusion: The finding of similar SPAQ scores at a wide latitude range defies the concept of SAD symptoms as latitude or longitude-dependent phenomena. en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherHCPA/FAMED/UFRGSen-US
dc.relationhttps://seer.ufrgs.br/hcpa/article/view/59646/pdf_36
dc.relationhttps://seer.ufrgs.br/hcpa/article/downloadSuppFile/59646/32594
dc.relationhttps://seer.ufrgs.br/hcpa/article/downloadSuppFile/59646/32595
dc.relationhttps://seer.ufrgs.br/hcpa/article/downloadSuppFile/59646/32596
dc.sourceClinical & Biomedical Research; v. 35, n. 4 (2015)en-US
dc.sourceClinical and Biomedical Research; v. 35, n. 4 (2015)pt-BR
dc.source2357-9730
dc.source0101-5575
dc.subjecten-US
dc.subjectSeasonality; Seasonal Affective Disorder; SPAQ; Depression; Psychometricsen-US
dc.subjecten-US
dc.titleScores of a web-based version of the seasonal pattern assessment questionnaire in Brazilen-US
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeAvaliado por Parespt-BR
dc.typePeer-reviewed Articleen-US


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