Evidence map›Paper›PMID 34327435›Full record

ArticleThe Lancet regional health. Western Pacific2021

Trends in sleep problems and patterns among Japanese adolescents: 2004 to 2017.

Yuichiro Otsuka, Yoshitaka Kaneita, Adam P Spira, Ramin Mojtabai, Osamu Itani, Maki Jike, Susumu Higuchi, Hideyuki Kanda, Yuki Kuwabara, Aya Kinjo and 1 more

Abstract read
In one paragraph

Article in The Lancet regional health. Western Pacific, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

  1. Article
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  3. Digital media balance and mental health: effects of a school-based program.Child and adolescent psychiatry and mental health · 2026
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  12. 24 h Activity Guidelines in Children and Adolescents: A Prevalence Survey in Asia-Pacific Cities.International journal of environmental research and public health · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Are adolescents sleeping less and worse than before?The Lancet regional health. Western Pacific · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Yuichiro OtsukaDivision of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30-1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo 173-8610, Japan.
Yoshitaka KaneitaDivision of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30-1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo 173-8610, Japan.
Adam P SpiraDepartment of Mental Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States.
Ramin MojtabaiDepartment of Mental Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States.
Osamu ItaniDivision of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30-1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo 173-8610, Japan.
Maki JikeDivision of Public Health, Department of Social Medicine, Nihon University School of Medicine, 30-1 Oyaguchi-kamimachi, Itabasi-ku, Tokyo 173-8610, Japan.
Susumu HiguchiDepartment of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama-city, Okayama 700-8558, Japan.
Hideyuki KandaNational Hospital Organization Kurihama Medical and Addiction Center, Yokosuka-city, Kanagawa 239-0841, Japan.
Yuki KuwabaraDivision of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago-city, Tottori 683-8503, Japan.
Aya KinjoDivision of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago-city, Tottori 683-8503, Japan.
Yoneatsu OsakiDivision of Environmental and Preventive Medicine, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago-city, Tottori 683-8503, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSleep problems in adolescence, such as insomnia and short sleep duration, are associated with physical and mental health problems. However, little is known about the recent trends in sleep problems among adolescents. Therefore, this study examined trends in sleep problems among Japanese adolescents.

methodsUsing data from the Lifestyle Survey of Adolescents collected in 2004 (

findingsWe analyzed data from 545,285 Japanese adolescents. Results indicated that, since 2004, the odds ratio for insomnia have decreased (Adjusted odds ratio [AOR] 0•85, 95% CI 0•82-0•87), as have the odds ratio for poor sleep quality (AOR 0•92, 95% CI 0•88-0•95). However, the odds ratio for shorter sleep duration (AOR 1•13, 95% CI 1•10-1•17) and late bedtimes tended to increase (AOR 1•06, 95% CI 1•03-1•08) during this period.

interpretationThe prevalence of insomnia symptoms and poor sleep quality among adolescents decreased from 2004 to 2017. However, there were increasing trends toward shorter sleep duration and late bedtimes. These changes are both relieving and concerning. Teachers, parents, and health professionals should consider educating adolescents regarding sleep hygiene, adjusting schedules of extracurricular activities, and enhancing time management to improve their sleep quantity.

fundingThis study received funding from Japan's Ministry of Health, Labour and Welfare.

Indexed as

AdolescenceAdolescent healthHealth surveysInsomniaSleepTrends

Identifiers

PMID34327435
PMCPMC8315371

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.