title: Sleep Duration and Sleep Quality: Associations With Depressive Symptoms Across Adolescence.
abstract: This study explored whether short sleep duration and sleep quality mediate the relationship between age and depressive symptoms. For comparison, we also explored whether depressive symptoms mediate the relationship between age and short sleep duration and sleep quality. The sample comprised 741 adolescents (63.5% female, mean age 15.78 years, range 11.92-19.67 years) in grades 7-12 from 11 secondary schools in metropolitan Melbourne, Australia. Students completed the Pittsburgh Sleep Quality Index (PSQI) and Center for Epidemiologic Studies Depression Scale (CES-D). Path analyses suggested that short sleep duration significantly mediated the relationship between age and depressive symptoms. Poor sleep quality also significantly mediated this relationship when sleep quality was defined by subjective judgement, but not sleep disturbance, sleep efficiency, or sleep onset latency. Depressive symptoms significantly mediated the relationship between age and short sleep duration and sleep quality (subjective judgement, sleep disturbance, sleep efficiency, and sleep onset latency). These findings suggest that the population-wide increase in depressive symptoms across adolescence is partially mediated by sleep-related developmental changes. They also highlight the importance of examining specific sleep problems when investigating the relationship between sleep and mood in this age group.
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.
authors.forename: Monika B
authors.initials: MB
authors.lastname: Raniti
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.|b Department of Psychology , University of Oregon , Eugene , Oregon.
authors.forename: Nicholas B
authors.initials: NB
authors.lastname: Allen
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.
authors.forename: Orli
authors.initials: O
authors.lastname: Schwartz
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.
authors.forename: Joanna M
authors.initials: JM
authors.lastname: Waloszek
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.|b Department of Psychology , University of Oregon , Eugene , Oregon.
authors.forename: Michelle L
authors.initials: ML
authors.lastname: Byrne
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Woods
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.|c School of Psychological Sciences , Monash University , Clayton , Victoria , Australia.
authors.forename: Bei
authors.initials: B
authors.lastname: Bei
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.
authors.forename: Christian L
authors.initials: CL
authors.lastname: Nicholas
authors.affiliation: a Melbourne School of Psychological Sciences , University of Melbourne , Parkville , Victoria , Australia.
authors.forename: John
authors.initials: J
authors.lastname: Trinder
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D000339:Affect; D000375:Aging / Q000523:psychology; D002648:Child; D003863:Depression / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D057566:Self Report; D012890:Sleep / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000453:epidemiology* / Q000503:physiopathology; D013334:Students / Q000523:psychology / Q000706:statistics & numerical data; D013997:Time Factors; D014739:Victoria / Q000453:epidemiology; D055815:Young Adult