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

Detalhes bibliográficos
Autor(a) principal: Martinez, Denis
Data de Publicação: 2015
Outros Autores: Silva, Roberto Pacheco da, Cassol, Cristiane Maria, Pires, Gabriel Natan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/158835
Resumo: Introduction: 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.
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spelling Martinez, DenisSilva, Roberto Pacheco daCassol, Cristiane MariaPires, Gabriel Natan2017-05-31T02:36:22Z20152357-9730http://hdl.handle.net/10183/158835001013166Introduction: 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.application/pdfengClinical and biomedical research. Porto Alegre. Vol. 35, n. 4, (2015), p. 200-210Estações do anoTranstorno Afetivo SazonalPsicometriaDepressãoSeasonalitySeasonal affective disorderSPAQDepressionPsychometricsScores of a web-based version of the seasonal pattern assessment questionnaire in Brazilinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001013166.pdf001013166.pdfTexto completo (inglês)application/pdf1657044http://www.lume.ufrgs.br/bitstream/10183/158835/1/001013166.pdf6e771f4a1876c2b35b4d20576ea9234cMD51TEXT001013166.pdf.txt001013166.pdf.txtExtracted Texttext/plain42457http://www.lume.ufrgs.br/bitstream/10183/158835/2/001013166.pdf.txtff3cc7642b841f9fb0723b01b5ae173eMD5210183/1588352021-09-18 04:44:53.661343oai:www.lume.ufrgs.br:10183/158835Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-09-18T07:44:53Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
title Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
spellingShingle Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
Martinez, Denis
Estações do ano
Transtorno Afetivo Sazonal
Psicometria
Depressão
Seasonality
Seasonal affective disorder
SPAQ
Depression
Psychometrics
title_short Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
title_full Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
title_fullStr Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
title_full_unstemmed Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
title_sort Scores of a web-based version of the seasonal pattern assessment questionnaire in Brazil
author Martinez, Denis
author_facet Martinez, Denis
Silva, Roberto Pacheco da
Cassol, Cristiane Maria
Pires, Gabriel Natan
author_role author
author2 Silva, Roberto Pacheco da
Cassol, Cristiane Maria
Pires, Gabriel Natan
author2_role author
author
author
dc.contributor.author.fl_str_mv Martinez, Denis
Silva, Roberto Pacheco da
Cassol, Cristiane Maria
Pires, Gabriel Natan
dc.subject.por.fl_str_mv Estações do ano
Transtorno Afetivo Sazonal
Psicometria
Depressão
topic Estações do ano
Transtorno Afetivo Sazonal
Psicometria
Depressão
Seasonality
Seasonal affective disorder
SPAQ
Depression
Psychometrics
dc.subject.eng.fl_str_mv Seasonality
Seasonal affective disorder
SPAQ
Depression
Psychometrics
description Introduction: 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.
publishDate 2015
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dc.relation.ispartof.pt_BR.fl_str_mv Clinical and biomedical research. Porto Alegre. Vol. 35, n. 4, (2015), p. 200-210
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