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Current work hours and coronary artery calcification (CAC): The Multi‐Ethnic Study of Atherosclerosis (MESA)
Journal Title
American Journal of Industrial Medicine
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Publication Date
2019-12-17
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Publication Volume
63
Publication Issue
4
Publication Begin
348
Publication End
358
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nihms-1063125.pdf
Adobe PDF, 403.97 KB
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Abstract
Background: Long work hours may be associated with adverse outcomes, including cardiovascular disease. We investigated cross-sectional associations of current work hours with coronary artery calcification (CAC).
Methods: Participants (n = 3046; 54.6% men) were from the Multi-Ethnic Study of Atherosclerosis. The number of hours worked in all jobs was obtained by questionnaire and CAC from computed tomography. The probability of a positive CAC score was modeled using log-binomial regression. Positive scores were modeled using analysis of covariance and linear regression.
Results: Sixteen percent of the sample worked over 50 hours per week. The overall geometric mean CAC score was 5.2 ± 10.0; 40% had positive scores. In fully-adjusted models, prevalence ratios were less than 40 hours: 1.00 (confidence interval [CI]: 0.88-1.12), 40:(ref), 41 to 49:1.13 (CI: 0.99-1.30), and ≥50:1.07 (CI: 0.94-1.23) and longer current work hours were not associated with higher mean CAC scores (<40:56.0 [CI: 47.3-66.3], 40:57.8 [CI: 45.6-73.3], 41 to 49:59.2 [CI: 45.2-77.6], ≥50:51.2 [CI: 40.5-64.8]; P = .686).
Conclusions: Current work hours were not independently associated with CAC scores.
Citation
Allison PJ, Jorgensen NW, Fekedulegn D, Landsbergis P, Andrew ME, Foy C, Hinckley Stukovsky K, Charles LE. Current work hours and coronary artery calcification (CAC): The Multi-Ethnic Study of Atherosclerosis (MESA). Am J Ind Med. 2020 Apr;63(4):348-358. doi: 10.1002/ajim.23084. Epub 2019 Dec 17. PMID: 31845385; PMCID: PMC7054127.