Evidence map›Paper›PMID 33942925›Full record

Observational studyJournal of sleep research2021

Social jetlag, a novel predictor for high cardiovascular risk in blue-collar workers following permanent atypical work schedules.

Sara Gamboa Madeira, Cátia Reis, Teresa Paiva, Carlos Santos Moreira, Paulo Nogueira, Till Roenneberg

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Journal of sleep research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

21 citing papers in PubMed, 37 citations in OpenAlex.

  1. Trial
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  6. Sleep, chronotype, social jetlag, and mental health in resident physicians: a cross-sectional study.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2024
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  16. Effects of sleep deprivation on coronary heart disease.The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2022
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  20. Observational
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 at 2 institutions in 2 countries.

Sara Gamboa MadeiraInstituto de Saúde Ambiental (ISAMB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0003-0764-571X
Cátia ReisInstituto de Saúde Ambiental (ISAMB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0001-6585-3993
Teresa PaivaInstituto de Saúde Ambiental (ISAMB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0002-7937-7841
Carlos Santos MoreiraMedicine Clinic I, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0003-1816-9579
Paulo NogueiraInstituto de Saúde Ambiental (ISAMB), Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0001-8316-5035
Till RoennebergInstitute and Polyclinic for Occupational- Social- and Environmental Medicine, LMU Munich, Munich, Germany.ORCID 0000-0003-2939-0332
University of Lisbon · PTLMU Klinikum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cardiovascular diseases cause >4 million deaths each year in Europe alone. Preventive approaches that do not only consider individual risk factors but their interaction, such as the Systematic COronary Risk Evaluation (SCORE), are recommended by European guidelines. Increased cardiovascular risk is associated with shift-work, surely interacting with the concurrent conditions: disruption of sleep, unhealthy behaviours, and circadian misalignment. Social jetlag (SJL) has been proposed as a way to quantify circadian misalignment. We therefore investigated the association between SJL and cardiovascular health in a cross-sectional observational study involving blue-collar workers, who either worked permanent morning, evening, or night shifts. Sociodemographic, health and productivity data were collected through questionnaires. Blood pressure and cholesterol were measured and the cardiovascular risk was estimated according to the relative risk SCORE chart. Bivariate analysis was performed according to the cardiovascular risk and the relationship between SJL and high cardiovascular risk was analysed through logistic regression. Cumulative models were performed, adjusted for various confounding factors. After 49 exclusions, the final sample comprised 301 workers (56% males; aged <40 years, 73%). Mean standard deviation (SD) SJL was 1:57 (1:38) hr (59.4% ≤2 hr). Cardiovascular risk was high in 20% of the sample. Multivariate analysis revealed SJL to be an independent risk factor for high cardiovascular risk. Each additional hour of SJL increased this risk by >30% (odds ratio 1.31, 95% confidence interval 1.02-1.68). This is the first study indicating that SJL potentially increases cardiovascular risk, and suggests that sleep and individual circadian qualities are critical in preventing negative health impacts of shift-work.

Indexed as

Cardiovascular DiseasesCircadian RhythmCross-Sectional StudiesFemaleHeart Disease Risk FactorsHumansMalePersonnel Staffing and SchedulingRisk FactorsSleepSurveys and QuestionnairesWork Schedule Tolerancecircadian misalignmentMCTQSCOREshift-work

Identifiers

PMID33942925
PMCPMC9286443
OpenAlexW3157790098

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.