Evidence map›Paper›PMID 34675720›Full record

ArticleNature and science of sleep2021

Social Jetlag Changes During the COVID-19 Pandemic as a Predictor of Insomnia - A Multi-National Survey Study.

Luiz Eduardo Mateus Brandão, Teemu Martikainen, Ilona Merikanto, Brigitte Holzinger, Charles M Morin, Colin A Espie, Courtney J Bolstad, Damien Leger, Frances Chung, Giuseppe Plazzi and 13 more

Open access · goldAbstract read
In one paragraph

Article in Nature and science of sleep, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 5% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
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  7. Article
  8. Impact of Gender on Insomnia.Brain sciences · 2023
    Article
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  14. The Oneiric Activity during and after the COVID-19 Total Lockdown in Italy: A Longitudinal Study.International journal of environmental research and public health · 2022
    Article
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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

23 authors at 19 institutions in 13 countries.

Luiz Eduardo Mateus BrandãoDepartment of Medical Sciences, Uppsala University, Uppsala, Sweden.ORCID 0000-0002-8672-7870
Teemu MartikainenDepartment of Medical Sciences, Uppsala University, Uppsala, Sweden.ORCID 0000-0003-2399-5138
Ilona MerikantoDepartment of Public Health Solutions, Finnish Institute for Health and Welfare, Helsinki, Finland.ORCID 0000-0002-1222-6678
Brigitte HolzingerZK-Schlafcoaching, Medical University Vienna, Vienna, Austria.ORCID 0000-0001-5385-4091
Charles M MorinÉcole de Psychologie, Université Laval, Québec, Canada.ORCID 0000-0002-8649-8895
Colin A EspieSleep & Circadian Institute, University of Oxford, Oxford, UK.ORCID 0000-0002-1294-8734
Courtney J BolstadDepartment of Psychology, Mississippi State University, Starkville, MS, USA.ORCID 0000-0003-2297-2778
Damien LegerAPHP, VIFASOM, Hôtel-Dieu, Centre du Sommeil et de la Vigilance, Université de Paris, Paris, France.ORCID 0000-0003-1168-480X
Frances ChungDepartment of Anesthesia and Pain Medicine, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada.ORCID 0000-0001-9576-3606
Giuseppe PlazziDepartment of Biomedical, Metabolic and Neural Science, University of Modena and Reggio Emilia, Modena, Italy.ORCID 0000-0002-1051-0472
Yves DauvilliersSleep-Wake Disorders Center, Department of Neurology, Gui-de-Chauliac Hospital, Institute for Neurosciences of Montpellier INM, INSERM, University of Montpellier, Montpellier, France.ORCID 0000-0003-0683-6506
Kentaro MatsuiNational Center of Neurology and Psychiatry National Institute of Mental Health, Department of Clinical Laboratory and Department of Sleep-Wake Disorders, Tokyo, Japan.ORCID 0000-0003-4538-5381
Luigi De GennaroDepartment of Psychology, Sapienza University of Rome, Rome, Italy.ORCID 0000-0003-3613-6631
Mariusz SieminskiDepartment of Emergency Medicine, Medical University of Gdansk, Gdansk, Poland.ORCID 0000-0001-8219-2912
Michael R NadorffDepartment of Psychology, Mississippi State University, Starkville, MS, USA.
Ngan Yin ChanLi Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China.ORCID 0000-0002-3009-3565
Yun Kwok WingLi Chiu Kong Family Sleep Assessment Unit, Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China.ORCID 0000-0002-5745-5474
Sérgio Arthuro Mota-RolimBrain Institute, Federal University of Rio Grande do Norte, Natal, RN, Brazil.ORCID 0000-0003-0196-5421
Yuichi InoueDepartment of Somnology, Tokyo Medical University, Tokyo, Japan.ORCID 0000-0001-7414-9017
Markku PartinenHelsinki Sleep Clinic, Vitalmed Research Center, Terveystalo Biobank and Research, Helsinki, Finland.ORCID 0000-0002-8182-9368
Christian BenedictSleep Science Laboratory, Department of Neuroscience, Uppsala University, Uppsala, Sweden.ORCID 0000-0002-8911-4068
Bjorn BjorvatnDepartment of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.ORCID 0000-0001-7051-745X
Jonathan CedernaesDepartment of Medical Sciences, Uppsala University, Uppsala, Sweden.ORCID 0000-0002-9052-8372
Uppsala University · SECity University of Hong Kong · HKUniversity of Helsinki · FIAssistance Publique – Hôpitaux de Paris · FRBaylor College of Medicine · USGdańsk Medical University · PLHaukeland University Hospital · NOInserm · FRInstitut Universitaire en Santé Mentale de Québec · CAIstituto delle Scienze Neurologiche di Bologna · ITMedical University of Vienna · ATMississippi State University · USNational Center of Neurology and Psychiatry · JPNorthwestern University · USTokyo Medical University · JPUniversidade Federal do Rio Grande do Norte · BRUniversity Health Network · CAUniversity of Modena and Reggio Emilia · ITUniversity of Oxford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeLifestyle and work habits have been drastically altered by restrictions due to the COVID-19 pandemic. Whether the associated changes in sleep timing modulate the risk of suffering from symptoms of insomnia, the most prevalent sleep disorder, is however incompletely understood. Here, we evaluate the association between the early pandemic-associated change in 1) the magnitude of social jetlag (SJL) - ie, the difference between sleep timing on working vs free days - and 2) symptoms of insomnia. PATIENTS AND

methodsA total of 14,968 anonymous participants (mean age: 40 years; 64% females) responded to a standardized internet-based survey distributed across 14 countries. Using logistic multivariate regression, we examined the association between the degree of social jetlag and symptoms of insomnia, controlling for important confounders like social restriction extension, country specific COVID-19 severity and psychological distress, for example.

resultsIn response to the pandemic, participants reported later sleep timing, especially during workdays. Most participants (46%) exhibited a reduction in their SJL, whereas 20% increased it; and 34% reported no change in SJL. Notably, we found that both increased and decreased SJL, as a result of the COVID-19 pandemic, were associated with later sleep midpoint (indicating a later chronotype) as well as more recurrent and moderate-to-severe symptoms of insomnia (about 23-54% higher odds ratio than subjects with unchanged SJL). Primarily those with reduced SJL shifted their bedtimes to a later timepoint, compared with those without changes in SJL.

conclusionOur findings offer important insights into how self-reported changes to the stability of sleep/wake timing, as reflected by changes in SJL, can be a critical marker of the risk of experiencing insomnia-related symptoms - even when individuals manage to reduce their social jetlag. These findings emphasize the clinical importance of analyzing sleep-wake regularity.

Indexed as

BNSQISImidsleepMSFscPHQ-4psychological distress

Identifiers

PMID34675720
PMCPMC8502537
OpenAlexW3204669260

What OpenQuestion holds

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LicenceCC BY-NC
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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.