Evidence map›Paper›PMID 31858391›Full record

ArticleSleep & breathing = Schlaf & Atmung2020

Sleep duration and overweight in Chinese adolescents: a prospective longitudinal study with 2-year follow-up.

Qing-Hai Gong, Si-Xuan Li, Si-Jia Wang, Yan-Hui Wu, Li-Yuan Han, Hui Li

Abstract read
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In one paragraph

Article in Sleep & breathing = Schlaf & Atmung, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

6 authors.

Qing-Hai GongDepartment of Epidemiology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, 315211, China.
Si-Xuan LiNingbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, Zhejiang Province, China.
Si-Jia WangNingbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, Zhejiang Province, China.
Yan-Hui WuYinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, 315040, Zhejiang Province, China. wuyanhui2020@yeah.net.
Li-Yuan HanDepartment of Epidemiology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, 315211, China. hanliyuan@nbu.edu.cn.
Hui LiNingbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, Zhejiang Province, China. lihui4329@163.com.

Funding

National Key R&D Program of China 2018YFC1315305Natural Science Foundation of Ningbo 2018A610403Nature Science Foundation of Ningbo 2016A610181Ningbo Health Branding Subject Fund (CN) PPXK2018-10Science Technology project of Ningbo 2017C50045
6 · The paper itself

Abstract

purposeThis prospectively designed study aimed to investigate the association between sleep duration and overweight in a cohort of Chinese adolescents.

methodsA school-based cohort study with a 2-year follow-up was conducted among Chinese adolescents in Ningbo region (China). For the baseline study, 1901 school-aged Chinese children aged 12-13 years were recruited. Finally, 1510 adolescents were successfully reinterviewed in October 2018. Participants were asked to complete a self-administered questionnaire, and their heights and weights were directly measured.

resultsOverweight adolescents had shorter sleep duration or later bedtimes than non-overweight children in baseline (P < 0.05). In the multivariable linear regression analysis, sleep duration was marginally significantly correlated with body mass index (BMI) at baseline and significantly correlated with this parameter at a 2-year follow-up (β = - 0.23, 95% confidence interval (CI): - 0.51 to 0.04, P < 0.1; β = - 0.27, 95% CI: - 0.42 to - 0.11, P < 0.05, respectively). After adjusting for potential confounders, the multivariable logistic regression analysis revealed associations of a longer sleep duration at baseline with a reduced likelihood of participants being overweight both at baseline and at follow-up (adjusted odds ratio (AOR) = 0.81, 95% CI: 0.66 to 1.00, P = 0.05; AOR = 0.43, 95% CI:0.24 to 0.76, P < 0.05, respectively).

conclusionsShorter sleep was associated with an increased likelihood of being overweight in Chinese adolescents, while a 1-h decrease in sleep per night led to a more than 50% increase in the overweight risk at the 2-year follow-up.

Indexed as

AdolescentBody Mass IndexChildChinaCohort StudiesCorrelation of DataFemaleFollow-Up StudiesHumansLikelihood FunctionsLongitudinal StudiesMaleOverweightProspective StudiesRisk FactorsSleepAdolescentsBMIChinaOverweightSleep duration

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Registered trials

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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.