title: Sleep/Wake Patterns and Parental Perceptions of Sleep in Children Born Preterm.
abstract: To compare sleep/wake patterns in children born preterm in Australia vs Canada and determine cultural differences in the relationship between parental perception of sleep and actual sleep behaviors.
  
  
  
  Australian and Canadian children born preterm were recruited from the Caffeine for Apnea of Prematurity trial (n = 188, 5-12 y) and underwent 14 days actigraphy monitoring. Parents completed the National Sleep Foundation 2004 Sleep in America questionnaire. Cross-cultural differences in sleep characteristics assessed by actigraphy and parent-reported questionnaire were examined. Correlational analyses determined the associations between parental perceptions of child sleep need and sleep behavior.
  
  
  
  Actigraphy showed preterm children obtained, on average, 8 h sleep/night, one hour less than population recommendations for their age. There was no difference in total sleep time (TST) between Australian and Canadian cohorts; however, bed and wake times were earlier in Australian children. Bedtimes and TST varied by 60 minutes from night to night in both cohorts. Parent-reported child TST on the National Sleep Foundation questionnaire was 90 minutes longer than recorded by actigraphy. Both bedtime and TST on weekdays and weekends were related to parental perception of child sleep need in the Australian cohort. Only TST on weekdays was related to parental perception of child sleep need in the Canadian cohort.
  
  
  
  This study suggests that short sleep duration and irregular sleep schedules are common in children born preterm. Cultural differences in the association between parental perception of child sleep need and actual sleep behaviors provide important targets for future sleep health education.
authors: The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia.
authors: Sarah N
authors: SN
authors: Biggs
authors: Department of Pediatrics, National Jewish Health, Denver, CO.
authors: Lisa J
authors: LJ
authors: Meltzer
authors: Department of Pediatrics, Sleep Center, Children's Hospital of Philadelphia; University of Pennsylvania School of Medicine, Philadelphia, PA.
authors: Ignacio E
authors: IE
authors: Tapia
authors: Department of Pediatrics, Sleep Center, Children's Hospital of Philadelphia; University of Pennsylvania School of Medicine, Philadelphia, PA.
authors: Joel
authors: J
authors: Traylor
authors: The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia.|Melbourne Children's Sleep Centre, Monash Children's, Monash Medical Centre. Melbourne, Australia.
authors: Gillian M
authors: GM
authors: Nixon
authors: The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia.
authors: Rosemary S C
authors: RS
authors: Horne
authors: Department of Obstetrics and Gynaecology, The Royal Women's Hospital, University of Melbourne, and Clinical Sciences, Murdoch Children's Research Institute, Melbourne, Australia.
authors: Lex W
authors: LW
authors: Doyle
authors: Department of Pediatrics, University of Toronto, Toronto, Canada.
authors: Elizabeth
authors: E
authors: Asztalos
authors: Department of Pediatrics, Sleep Center, Children's Hospital of Philadelphia; University of Pennsylvania School of Medicine, Philadelphia, PA.|Department of Psychology, Saint Joseph's University, Philadelphia, PA.
authors: Jodi A
authors: JA
authors: Mindell
authors: Department of Pediatrics, Sleep Center, Children's Hospital of Philadelphia; University of Pennsylvania School of Medicine, Philadelphia, PA.
authors: Carole L
authors: CL
authors: Marcus
mesh_terms: D056044:Actigraphy; D001315:Australia / Q000453:epidemiology; D002170:Canada / Q000453:epidemiology; D002648:Child; D002652:Child Behavior / Q000502:physiology*; D002675:Child, Preschool; D002940:Circadian Rhythm / Q000502:physiology; D003431:Cross-Cultural Comparison; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D010290:Parents / Q000523:psychology*; D047928:Premature Birth / Q000453:epidemiology*; D012890:Sleep / Q000502:physiology*; D011795:Surveys and Questionnaires; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology*
keywords: actigraphy; cross-cultural; preterm; sleep duration; sleep patterns