title: Sleep and use of electronic devices in adolescence: results from a large population-based study.
abstract: OBJECTIVE
  Adolescents spend increasingly more time on electronic devices, and sleep deficiency rising in adolescents constitutes a major public health concern. The aim of the present study was to investigate daytime screen use and use of electronic devices before bedtime in relation to sleep.
  
  
  METHODS
  A large cross-sectional population-based survey study from 2012, the youth@hordaland study, in Hordaland County in Norway.
  
  
  METHODS
  Cross-sectional general community-based study.
  
  
  METHODS
  9846 adolescents from three age cohorts aged 16-19. The main independent variables were type and frequency of electronic devices at bedtime and hours of screen-time during leisure time.
  
  
  RESULTS
  Sleep variables calculated based on self-report including bedtime, rise time, time in bed, sleep duration, sleep onset latency and wake after sleep onset.
  
  
  RESULTS
  Adolescents spent a large amount of time during the day and at bedtime using electronic devices. Daytime and bedtime use of electronic devices were both related to sleep measures, with an increased risk of short sleep duration, long sleep onset latency and increased sleep deficiency. A dose-response relationship emerged between sleep duration and use of electronic devices, exemplified by the association between PC use and risk of less than 5 h of sleep (OR=2.70, 95% CI 2.14 to 3.39), and comparable lower odds for 7-8 h of sleep (OR=1.64, 95% CI 1.38 to 1.96).
  
  
  CONCLUSIONS
  Use of electronic devices is frequent in adolescence, during the day as well as at bedtime. The results demonstrate a negative relation between use of technology and sleep, suggesting that recommendations on healthy media use could include restrictions on electronic devices.
authors: Regional Centre for Child and Youth Mental Health and Child Welfare, Uni Research Health, Bergen, Norway.
authors: Mari
authors: M
authors: Hysing
authors: Department of Psychosocial Science, University of Bergen, Bergen, Norway Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway.
authors: Ståle
authors: S
authors: Pallesen
authors: Regional Centre for Child and Youth Mental Health and Child Welfare, Uni Research Health, Bergen, Norway.
authors: Kjell Morten
authors: KM
authors: Stormark
authors: Regional Centre for Child and Youth Mental Health and Child Welfare, Uni Research Health, Bergen, Norway.
authors: Reidar
authors: R
authors: Jakobsen
authors: Regional Centre for Child and Youth Mental Health and Child Welfare, Uni Research Health, Bergen, Norway Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway.
authors: Astri J
authors: AJ
authors: Lundervold
authors: Division of Mental Health, Norwegian Institute of Public Health, Bergen, Norway Uni Research Health, Bergen, Norway Department of Psychiatry, Helse Fonna HF, Haugesund, Norway.
authors: Børge
authors: B
authors: Sivertsen
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D040421:Cell Phone; D003201:Computers; D003430:Cross-Sectional Studies; D006970:Disorders of Excessive Somnolence / Q000209:etiology; D055615:Electrical Equipment and Supplies / Q000009:adverse effects*; D004581:Electronics; D005260:Female; D006801:Humans; D008297:Male; D009664:Norway; D012307:Risk Factors; D012574:Schools; D057566:Self Report; D012890:Sleep; D007319:Sleep Initiation and Maintenance Disorders / Q000209:etiology*; D011795:Surveys and Questionnaires; D013672:Technology; D013690:Television; D018910:Video Games / Q000009:adverse effects
keywords: EPIDEMIOLOGY; adolescents; media use; sleep
references: J Appl Psychol. 2003 Oct;88(5):879-903
references: 14516251
references: J Clin Sleep Med. 2010 Apr 15;6(2):184-9
references: 20411697
references: Sleep Med. 2014 Sep;15(9):1107-14
references: 25018025
references: J Fam Psychol. 2007 Mar;21(1):4-19
references: 17371105
references: Sleep. 1980;2(4):453-60
references: 7403744
references: Pediatrics. 1999 Sep;104(3):e27
references: 10469810
references: J Gerontol B Psychol Sci Soc Sci. 2015 Jan;70(1):46-56
references: 24829303
references: Sleep Med. 2011 Aug;12(7):659-65
references: 21689984
references: J Biol Rhythms. 1995 Jun;10(2):129-32
references: 7632986
references: Sleep. 1986;9(1):38-53
references: 3961366
references: J Sleep Res. 2013 Oct;22(5):549-56
references: 23611716
references: J Adolesc. 2007 Aug;30(4):569-85
references: 16979753
references: Adolesc Med State Art Rev. 2010 Dec;21(3):418-29, vii
references: 21302852
references: Arch Pediatr Adolesc Med. 2004 Jun;158(6):562-8
references: 15184220
references: Aust N Z J Public Health. 2012 Apr;36(2):106-8
references: 22487341
references: J Sleep Res. 2003 Sep;12(3):263
references: 12941066
references: BMJ. 2003 Jan 25;326(7382):219
references: 12543843
references: Pediatrics. 2004 Nov;114(5):1235-41
references: 15520101
references: J Pediatr. 1981 Sep;99(3):486-8
references: 7264816
references: Sleep. 2013 Mar;36(3):303-4
references: 23450899
references: Arch Dis Child. 2000 Oct;83(4):289-92
references: 10999857
references: Sleep Med Rev. 2010 Jun;14(3):179-89
references: 20093054
references: J Abnorm Child Psychol. 2008 Apr;36(3):411-9
references: 18161021
references: Scand J Public Health. 2008 Nov;36(8):889-95
references: 19004908
references: Sleep. 2011 Jun;34(6):797-800
references: 21629368
references: Sleep. 2008 Nov;31(11):1515-25
references: 19014071
references: J Sleep Res. 2006 Sep;15(3):266-75
references: 16911029
references: J Paediatr Child Health. 2006 Sep;42(9):515-20
references: 16925537
references: BMC Public Health. 2010;10:66
references: 20152023
references: Sleep Med. 2010 Sep;11(8):735-42
references: 20673649
references: Behav Res Ther. 2003 Apr;41(4):427-45
references: 12643966
references: Epidemiology. 2008 Nov;19(6):838-45
references: 18854708
references: J Physiol. 2003 Jun 15;549(Pt 3):945-52
references: 12717008
references: Int J Behav Nutr Phys Act. 2010 May 21;7:46
references: 20492643
references: J Psychosom Res. 2002 Jul;53(1):529-37
references: 12127168
references: J Paediatr Child Health. 2006 Jul-Aug;42(7-8):428-33
references: 16898880