Published: Lung-Chang Chien

Lung-Chang Chien (Environmental and Occupational Health) co-authored a research paper, "Nonlinear Associations Between Working Hours and Overwork-Related Cerebrovascular and Cardiovascular Diseases (CCVD)" in Scientific Reports. This paper investigated the relationship between working hours and different cerebrovascular and cardiovascular diseases (CCVD) severity outcomes, including death, disability, and illness. The study population was selected across industries in Taiwan from 2006 to 2016. The statistical analysis resulted in a significantly nonlinear association between industry-average working hours and CCVD, especially when monthly working hours increased from 169 to 187. Each one-hour increase in working hours had a stronger effect on the relative risk increase in death and disability than on illness. Variations in CCVD risks existed across industries, with the highest risk in transportation and information. When most countries have no solid definition of how many working hours are related to overwork, this study provided scientific evidence for further reference to related agencies. 

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