The objective of this study was to show the association of high-sensitivity C-reactive protein (hs-CRP) level with working hours in different age groups.
We used data from Korean National Health and Nutrition Survey. The odds ratios (ORs) and 95% confidence intervals (CIs) of variables for elevated hs-CRP (>3.0 mg/L) were generated with logistic regression models. Significant variables were verified with an adjusted multivariate logistic model after stratification of age groups.
Working for more than 55 hours per week was associated with elevated hs-CRP level in the old-ages group (≥ 60 years old: OR 2.18, 95% CI 1.07 to 4.45). Working for 40 to 55 hours per week was associated with decreased hs-CRP in the young-ages group (OR 0.58, 95% CI 0.37 to 0.93).
Working hours appear to influence the levels of hs-CRP in individuals aged older than 60 years.
Department of Public Health and Hygiene, Andong Public Health Center, Andong, Korea (Dr Lee); Department of Medicine, Graduate School, The Catholic University of Korea, Seoul, Korea (Dr Lee); and Department of Occupational and Environmental Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea (Dr Kim).
Address correspondence to: Hyoung-Ryoul Kim, MD, PhD, Department of Occupational and Environmental Medicine, College of Medicine, The Catholic University of Korea, 222 Banpodae-ro, Seocho-gu, Seoul 06591, Republic of Korea (firstname.lastname@example.org).
This study is done without any funding source.
Authors Kim and Lee have no relationships/conditions/circumstances that present potential conflict of interest.
The JOEM editorial board and planners have no financial interest related to this research.