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Current work hours and coronary artery calcification (CAC): The Multi‐Ethnic Study of Atherosclerosis (MESA)
Author(s) -
Allison Penelope J.,
Jorgensen Neal W.,
Fekedulegn Desta,
Landsbergis Paul,
Andrew Michael E.,
Foy Capri,
Hinckley Stukovsky Karen,
Charles Luenda E.
Publication year - 2020
Publication title -
american journal of industrial medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 104
eISSN - 1097-0274
pISSN - 0271-3586
DOI - 10.1002/ajim.23084
Subject(s) - medicine , confidence interval , cardiology , coronary artery disease , cross sectional study , agatston score , linear regression , coronary artery calcium , demography , statistics , pathology , mathematics , sociology
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.