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The effect of shift work on high sensitivity C-reactive protein level among female workers

 ( Kwak Ho-Sung ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine

 ( Park Hyoung-Ouk ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Kim Young-Ouk ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Son Jun-Seok ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Kim Chan-Woo ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Lee Jun-Ho ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Shin Young-Hoo ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Park Seung-Hyun ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Chung Eui-Yup ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine
 ( Chae Chang-Ho ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Occupational and Environmental Medicine

Abstract


Background: This study assessed the association between shift work and high-sensitivity C-reactive protein (hs-CRP) level, a risk factor for cardiovascular disease (CVD), in female workers in electronics manufacturing services (EMS).

Methods: Female EMS workers who received special medical examinations for workers in Gyeongnam, Korea between January 2017 and December 2017 were enrolled in this study. Their age, marital status, education level, alcohol consumption, smoking habit, regular exercise, quality of sleep, work stress, and depression were investigated, and blood tests were conducted. The t- and χ2 tests were conducted to compare the general and biochemical characteristics between daytime and shift worker groups. Age-adjusted partial correlation analysis was performed to examine the linear relationship between hs-CRP level and other risk factors for CVDs. In addition, the difference in hs-CRP levels according to work schedule was analyzed by ANCOVA after adjusting for variables that could affect the hs-CRP level.

Results: Although the average hs-CRP levels did not differ significantly between daytime and shift workers (0.92 ± 1.87 and 1.07 ± 2.20 mg/dL, respectively), shift workers tended to show a higher hs-CRP level (p = 0.067). After adjusting for variables that can affect the hs-CRP level, the estimated average hs-CRP level was significantly higher in shift workers (1.325 ± 0.156 mg/dL) than that in daytime workers (0.652 ± 0.350 mg/dL) (p = 0.003).

Conclusions: The results of this study identified a relationship between shift work and hs-CRP level increase in women. Because multiple studies have reported associations between increased hs-CRP and CVD, follow-up of hs-CRP may help early detection of CVD in shift workers.

키워드

Shift work; Inflammation; High sensitivity C-reactive protein; Female workers
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