REVIEW PAPER
Work stress and the risk of recurrent coronary heart disease events: A systematic review and meta-analysis
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1
University of Düsseldorf, Düsseldorf, Germany
(Institute of Occupational and Social Medicine, Centre for Health and Society, Faculty of Medicine)
2
University of Düsseldorf, Düsseldorf, Germany
(Institute of Medical Sociology, Centre for Health and Society, Faculty of Medicine)
3
Kunming Medical University, Kunming, China
(Department of Cardiology, First Affiliated Hospital)
4
University of Düsseldorf, Düsseldorf, Germany
(Senior Professorship on Work Stress Research, Life-Science Centre)
Corresponding author
Jian Li
Institute of Occupational and Social Medicine, Centre for Health and Society, Faculty of Medicine, University of Düsseldorf,
Düsseldorf 40225, Universität Strasse 1, Germany
Int J Occup Med Environ Health. 2015;28(1):8-19
KEYWORDS
ABSTRACT
Though much evidence indicates that work stress increases the risk of incident of coronary heart disease (CHD), little is
known about the role of work stress in the development of recurrent CHD events. The objective of this study was to review
and synthesize the existing epidemiological evidence on whether work stress increases the risk of recurrent CHD events
in patients with the first CHD. A systematic literature search in the PubMed database (January 1990 – December 2013)
for prospective studies was performed. Inclusion criteria included: peer-reviewed English papers with original data, studies
with substantial follow-up (> 3 years), end points defined as cardiac death or nonfatal myocardial infarction, as well
as work stress assessed with reliable and valid instruments. Meta-analysis using random-effects modeling was conducted
in order to synthesize the observed effects across the studies. Five papers derived from 4 prospective studies conducted in
Sweden and Canada were included in this systematic review. The measurement of work stress was based on the Demand-
Control model (4 papers) or the Effort-Reward Imbalance model (1 paper). According to the estimation by meta-analysis
based on 4 papers, a significant effect of work stress on the risk of recurrent CHD events (hazard ratio: 1.65, 95% confidence
interval: 1.23–2.22) was observed. Our findings suggest that, in patients with the first CHD, work stress is associated
with an increased relative risk of recurrent CHD events by 65%. Due to the limited literature, more well-designed prospective
research is needed to examine this association, in particular, from other than western regions of the world.