The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
The relationships between sex, age, geography and time in bed in adolescents: A meta-analysis of data from 23 countries
Open accessAbstract
OBJECTIVES To quantify the relationships between age, sex and country of residence and sleep time (time in bed) in young people aged 9-18 years. METHODS Thirty studies of sleep patterns in healthy adolescents from the last 30 years in 20 countries were reviewed. Monte Carlo simulation generated pseudo-data where only summary statistics were available. Raw and pseudo-data were combined, generating a total of 92,977 data points. A mixed model, clustering on countries, analysed data for school and non-school days separately. RESULTS Sleep time varied with sex, age and geographical region. School day sleep differed slightly between boys and girls, girls sleeping 11 min/night more than boys (p = 0.003). On non-school days, girls slept 29 min more each day (p = 0.003). Sleep time declined with age, - 14 min/day per year of age (school days), and seven min/night per year of age (non-school days). Large differences between countries, showed adolescents from Asian countries sleeping 40-60 min less each night than Americans, and 60-120 min less than Europeans. CONCLUSION Sex, age, geographical region and day type interact and predict sleep patterns in adolescents. One consistent trend is the increasing gap between sleep on school days and non-school days as adolescents get older.
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“The daytime dysfunction component of the PSQI clinically manifests as impaired wakefulness and reduced daily productivity, constitutes a significant metric of overall sleep quality, and has substantial implications for cognitive and behavioural performance [31,52,53].”
From Concussion Disrupts Sleep in Adolescents: A Systematic Review and Meta-Analysis (2025) · cites this paper as [53]
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Cites
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Functional consequences of inadequate sleep in adolescents: A systematic review
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In search of lost sleep: secular trends in the sleep time of school-aged children and adolescents
Matricciani, L., Olds, T., & Petkov, J. (2012) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2011.03.005 · Cited by 698
Self-citationLo, J. C., Ong, J. L., Leong, R. L. F., Gooley, J. J., & Chee, M. W. L. (2016) · Sleep · doi:10.5665/sleep.5552 · Cited by 446
Sleep Patterns and Mental Health Correlates in US Adolescents
Zhang, J., Paksarian, D., Lamers, F., Hickie, I. B., He, J., & Merikangas, K. R. (2017) · The Journal of Pediatrics · doi:10.1016/j.jpeds.2016.11.007 · Cited by 296
Crowley, S. J., Van Reen, E., LeBourgeois, M. K., Acebo, C., Tarokh, L., Seifer, R., Barker, D. H., & Carskadon, M. A. (2014) · PLoS ONE · doi:10.1371/journal.pone.0112199 · Cited by 273
“sleep time [1,9,13,14,15,16,17,18,19].”
Metadata
- Authors
- Olds, T., Blunden, S., Petkov, J., & Forchino, F.
- Venue
- Sleep Medicine Reviews
- Publisher
- Elsevier BV
- Published
- 2010-12
- Volume
- 14
- Issue
- 6
- Pages
- 371-378
- ISSN
- 1087-0792 (ISSN-L)
- OpenAlex
- W2095014953
- Cited by
- 286
- References
- 10
- FWCI
- 1.59
- Type
- journal article
- Language
- en
- Open access
- green
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