Evidence map›Paper›PMID 32720335›Full record

ArticleJournal of occupational health2020

Effect of implementing an overwork-prevention act on working hours and overwork-related disease: A mediation analysis.

Ro-Ting Lin, Ying-Wen Liang, Masaya Takahashi, Hisashi Eguchi, Akizumi Tsutsumi, Sheng-Hsuan Lin

Open access · goldAbstract read
In one paragraph

Article in Journal of occupational health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 10% 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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. 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

6 authors at 5 institutions in 2 countries.

Ro-Ting LinDepartment of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan.ORCID https://orcid.org/0000-0002-2687-203X
Ying-Wen LiangInstitute of Statistics, National Chiao Tung University, Hsinchu, Taiwan.
Masaya TakahashiResearch Center for Overwork-Related Disorders, National Institute of Occupational Safety and Health, Kawasaki, Japan.ORCID https://orcid.org/0000-0003-1398-4347
Hisashi EguchiDepartment of Public Health, Kitasato University School of Medicine, Sagamihara, Japan.ORCID https://orcid.org/0000-0002-4153-8574
Akizumi TsutsumiDepartment of Public Health, Kitasato University School of Medicine, Sagamihara, Japan.ORCID https://orcid.org/0000-0003-0966-4869
Sheng-Hsuan LinInstitute of Statistics, National Chiao Tung University, Hsinchu, Taiwan.ORCID https://orcid.org/0000-0003-0714-2354
National Yang Ming Chiao Tung University · TWChina Medical University · TWKitasato University · JPNational Institute of Occupational Safety and Health · JPUniversity of Occupational and Environmental Health Japan · JP

Funding

China Medical University, Taiwan CMU 108-MF-09Ministry of Science and Technology, Taiwan 107-2314-B-039 -062 -MY3Ministry of Science and Technology, Taiwan 108-2636-B-009 -001
6 · The paper itself

Abstract

objectivesOverwork has been recognized as a risk factor for cerebrovascular and cardiovascular disease (CCVD). To our best knowledge, Japan is the first country in the world to implement an independent act (the 2014 Act) for the prevention of overwork-related disease, which was promoted through application of preventive measures, such as reductions in working hours. We assessed changes in working hours and overwork-related CCVD before and after introduction of the 2014 Act.

methodsWe calculated the overwork-related CCVD incidence rate and average monthly working hours for 10 industry groups in Japan with data from 2012 to 2018. We applied a causal mediation analysis to estimate the total effect of implementing the 2014 Act on the overwork-related CCVD and the effect mediated by working hours.

resultsAn average of 271 for every 48 million employees developed overwork-related CCVD per year. After introducing the 2014 Act, the incidence rate ratio of overwork-related CCVD was 0.881-fold lower (95% CI 0.780-0.995) compared with before the policy change. The 2014 Act contributed to a decrease of 26% (78 cases per year; 95% CI 29-173) of the overwork-related CCVD incidence per year. Approximately 41% (32 cases per year) of this effect could be explained by reduced working hours.

conclusionsOur study highlights the impact of the 2014 Act in Japan on the reduction in working hours, which further contributes to the reduction in overwork-related CCVD. Policymakers should consider adopting our innovative approach to assess the mediation effect underlying the implementation of new policies.

Indexed as

Health PolicyOccupational HealthCardiovascular DiseasesCerebrovascular DisordersHumansIncidenceJapanMediation AnalysisOccupational DiseasesWork Schedule Tolerancecerebrovascular and cardiovascular diseasehealth policymediation analysisoverworkpreventionworking hours

Identifiers

PMID32720335
PMCPMC7385245
OpenAlexW3045701942

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.