Evidence map›Paper›PMID 27306271›Full record

ArticleSleep2016

Sleep Duration Associated with the Lowest Risk of Depression/Anxiety in Adolescents.

Yasutaka Ojio, Atsushi Nishida, Shinji Shimodera, Fumiharu Togo, Tsukasa Sasaki

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
8.0field-weighted citation impact, top 3% of its field
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

52 citing papers in PubMed, 1 synthesis or guideline pooled it, 116 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Yasutaka OjioDepartment of Physical and Health Education, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
Atsushi NishidaDepartment of Psychiatry and Behavioral Science, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan.
Shinji ShimoderaDepartment of Neuropsychiatry, Kochi University School of Medicine, Kochi, Japan.
Fumiharu TogoDepartment of Physical and Health Education, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
Tsukasa SasakiDepartment of Physical and Health Education, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
The University of Tokyo · JPKōchi University · JPTokyo Metropolitan Institute of Medical Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesTo investigate sleep duration associated with the least depression/anxiety in adolescence.

methodsGrades 7-12 Japanese students (n = 18,250, aged 12-18 y) from public junior high/high schools were studied in a cross-sectional design. Due to missing/implausible data, 15,637 out of the 18,250 students were statistically analyzed. Relationship between sleep duration on school nights and depression/anxiety, measured using self-report questionnaires, including the General Health Questionnaire-12 (GHQ-12), were studied by sex and grade, controlling for bedtime regularity.

resultsWhen sleep duration was classified by 1-h intervals, rate of adolescents with a GHQ-12 score ≥ 4 was the lowest in males and females who slept 8.5-9.5 h and 7.5-8.5 h, respectively, (designated "references") in both grades 7-9 and 10-12. The rate was significantly higher than the references in both males and females who slept < 7.5 h, regardless of grade (P < 0.05, logistic regression). GHQ-12 tended to be worse in adolescents (2.0%-13.5%) who slept longer than the references. Sleep duration for the minimum GHQ-12 score was estimated to be 8.8 and 8.5 h in males, and 8.0 and 7.5 h in females, in grades 7-9 and 10-12, respectively, using the General Additive Model.

conclusionsSleep duration of ≥ 8.5 h on school nights may be associated with the lowest risk of depression/anxiety on average in male adolescents. Although the duration was estimated to be shorter in females (≥ 7.5 h) than males, this should be interpreted carefully. Most adolescents may currently be sleeping less than the optimal duration. COMMENTARY: A commentary on this article appears in this issue on page 1491.

Indexed as

AdolescentAnxietyChildCross-Sectional StudiesDepressionFemaleHumansJapanLogistic ModelsMaleRisk FactorsSchoolsSelf ReportSleepStudentsSurveys and QuestionnairesadolescentsageGeneral Health Questionnaire-12mental healthsexsleep duration

Identifiers

PMID27306271
PMCPMC4945315
OpenAlexW2468145844

What OpenQuestion holds

Textmetadata
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.