Shift work, occupation and coronary heart disease over
Open accessAbstract
OBJECTIVES: The risk of coronary heart disease (CHD) in shift work and the possible pathways for CHD in industrial workers were studied along with the importance of shift work as an occupational class gradient of CHD risk. METHODS: Data from a psychosocial questionnaire and on life-style factors, blood pressure, and serum lipid levels were used for a follow-up study of a cohort of 1806 workers. CHD was determined from official Finnish registers. Cox's proportional hazards models were used with different covariates to evaluate the relative risks associated with shift work. RESULTS: All the blue-collar workers smoked more and a had higher systolic blood pressure than the white-collar workers. Three-shift workers scored low for job-decision latitude on the Karasek job stress scales. There were no differences in the total cholesterol or high-density lipoprotein cholesterol levels. When all the shift workers were compared with all the day workers, the relative risk of CHD was 1.5 [95% confidence interval (95% CI) 1.1-2.1] when only age was adjusted for and 1.4 (95% CI 1.0-1.9) when life-style factors, blood pressure, and serum lipids were also adjusted for. The blue-collar day workers and 2-shift and 3-shift workers had relative risks of 1.3 (95% CI 0.8-2.0), 1.9 (95% CI 1.1-3.4), and 1.7 (95% CI 1.1-2.7), respectively, when compared with the white-collar day workers. CONCLUSIONS: Shift work is an important part of the occupational gradient in CHD risk among industrial workers; some evidence was found for the hypothesis that a direct stress-related mechanism explains part of the increased CHD risk.
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As many as 20% of shift workers opt out of shift work due to sleep disturbances and adverse stress reactions.
“As many as 20% of shift workers ultimately opt out of shift work due to sleep disturbances and adverse stress reactions [82].”
From Shift Work: Disrupted Circadian Rhythms and Sleep—Implications for Health and Well-being (2017) · cites this paper as [82]
Shift workers have a relative risk for coronary heart disease of 1.5 compared to day workers.
“An epidemiological study in 1,806 workers showed a relative risk for coronary heart disease in shift workers of 1.5 compared to day workers [19].”
From Metabolic effects of sleep disruption, links to obesity and diabetes (2014) · cites this paper as [19]
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- Authors
- Tenkanen, L., Sjöblom, T., Kalimo, R., Alikoski, T., & Härmä, M.
- ORCID
- Härmä, Mikko
- Venue
- Scandinavian Journal of Work, Environment & Health
- Published
- 1997-08
- Volume
- 23
- Issue
- 4
- Pages
- 257-265
- ISSN
- 0355-3140 (ISSN-L)
- 1795-990X
- OpenAlex
- W2140373043
- Cited by
- 194
- References
- 29
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 3 · 2023: 6 · 2022: 3 · 2021: 5 · 2020: 3 · 2019: 8 · 2018: 2 · 2017: 6 · 2016: 9 · 2015: 5 · 2014: 7 · 2013: 7 · 2012: 7
- FWCI
- 11.46
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by
- Locations
- Scandinavian Journal of Work Environment & Health (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Työsuojelurahasto
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Health Sciences › Health Professions › General Health Professions › Workplace Health and Well-being
- Health Sciences › Medicine › Epidemiology › Healthcare Systems and Public Health
- Keywords
- shift work, coronary artery disease, industrial workers, blue-collar workers, white-collar workers, occupational stress, job decision latitude, smoking, systolic blood pressure, serum lipids, cholesterol, cardiovascular risk
- MeSH terms
- Adult, Blood Pressure, Clinical Trials as Topic, Coronary Disease, Finland, Follow-Up Studies, Humans, Life Style, Lipids, Male, Middle Aged, Occupational Diseases, Personnel Staffing and Scheduling, Risk Factors, Socioeconomic Factors, Work Schedule Tolerance
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