title: Psychometric properties of Glasgow Sleep Effort Scale in Portuguese language.
abstract: Sleep effort is generally defined as the attempt to force and induce sleep in a voluntary manner. This study aimed to document the psychometric properties of a brief measure of sleep effort--the Glasgow Sleep Effort Scale--in its European (Portuguese) version using a large sample (N = 2,995). The results supported the good internal consistency of the overall scale scores (α = .79). Potential construct validity was evaluated with various methods, including criterion validity. There was also a convergent validity indicator. Principal components analysis revealed a 1-dimensional structure that accounted for 45% of the total variance. This preliminary study suggests that this Portuguese version of the Glasgow Sleep Effort Scale is a measure of sleep behavior suitable for research and clinical purposes. However, more studies are needed, particularly with clinical groups.
authors.affiliation: Department of Education, University of Aveiro.
authors.forename: Mariana Soares
authors.initials: MS
authors.lastname: Meia-Via
authors.affiliation: Department of Education, University of Aveiro.
authors.forename: Daniel Ruivo
authors.initials: DR
authors.lastname: Marques
authors.affiliation: Nuffield Department of Clinical Neurosciences and Sleep and Circadian Neuroscience Institute, University of Oxford.
authors.forename: Colin A
authors.initials: CA
authors.lastname: Espie
authors.affiliation: Department of Education, University of Aveiro.
authors.forename: Carlos Fernandes
authors.initials: CF
authors.lastname: da Silva
authors.affiliation: Department of Education, University of Aveiro.
authors.forename: Ana
authors.initials: A
authors.lastname: Allen Gomes
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D011174:Portugal; D025341:Principal Component Analysis; D011594:Psychometrics; D012890:Sleep; D012893:Sleep Wake Disorders / Q000175:diagnosis*; D014175:Translating; D055815:Young Adult