Evidence map›Paper›PMID 36101013›Full record

ArticleJournal of occupational health2022

Cohort study of long working hours and increase in blood high-sensitivity C-reactive protein (hsCRP) concentration: Mechanisms of overwork and cardiovascular disease.

Woncheol Lee, Hyeon Woo Yim, Yeseong Lee

Open access · goldAbstract read
In one paragraph

Article in Journal of occupational health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Long Working Hours and Risk of Ischemic Heart Disease Among Japanese Workers: The Jichi Medical School Cohort Study.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2026
    Article
  3. Article
  4. Research advances inAnimal nutrition (Zhongguo xu mu shou yi xue hui) · 2025
    Review
  5. [Overwork induces vascular endothelial barrier dysfunction in mice].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2024
    Article
  6. Review
  7. Article
  8. Cardiovascular health and workload in university workers.Revista brasileira de medicina do trabalho : publicacao oficial da Associacao Nacional de Medicina do Trabalho-ANAMT
    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

3 authors at 2 institutions in 1 country.

Woncheol LeeDepartment of Public Health, Graduate School, The Catholic University of Korea, Seoul, Republic of Korea.ORCID https://orcid.org/0000-0001-8535-3988
Hyeon Woo YimDepartment of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Yeseong LeeDepartment of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Kangbuk Samsung Hospital · KRCatholic University of Korea · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesWe aimed to find evidence of the inflammation-mediated mechanism by which long working hours contribute to cardiovascular disease (CVD).

methodsThis cohort study was performed in 56 953 Korean adults free of CVD who underwent a comprehensive screening examination and were followed for up to 7 years. An increase in blood high-sensitivity C-reactive protein (hsCRP) of 1 mg/L or more at the follow-up visit was defined as an incidence. The average weekly working hours in the past year were categorized as ≤40, 41-52, 53-60, and ≥60 h per week. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using generalized estimating equations to calculate the risk of an incidental increase of hsCRP.

resultsParticipants with longer working hours had a higher incidence of hsCRP. Multivariable-adjusted ORs (95% CIs) of incident cases for ≥61 h compared with ≤40 h was 1.69 (1.04-2.75). In subgroup analyses according to sex and the presence of hypertension and diabetes, the risk of hsCRP incidence were highest in the group working more than 61 h in all subgroups, but none of them were statistically significant.

conclusionsWorking hours are independently associated with increased risk of elevated hsCRP in a dose-response relationship. Excessive long-time work is a risk factor for CVD, and it was found that an increase in hsCRP was associated with the pathogenesis.

Indexed as

Cardiovascular DiseasesC-Reactive ProteinAdultCohort StudiesElectrolytesHumansRisk FactorsC-Reactive ProteinElectrolytescardiovascular diseasecohort studyhigh-sensitivity C-reactive proteinlongitudinal studyworking hours

Identifiers

PMID36101013
PMCPMC9470891
OpenAlexW4295751056

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.