Working Hours and Cardiovascular Disease in Korean Workers: A Case-control Study

Title
Working Hours and Cardiovascular Disease in Korean Workers: A Case-control Study
Authors
박신구
Keywords
Coronary heart disease, Korea, Occupational disease, Overtime work, Stroke
Issue Date
2013
Publisher
JOURNAL OF OCCUPATIONAL HEALTH
Series/Report no.
JOURNAL OF OCCUPATIONAL HEALTH ; Vol.55 no.5 Startpage 385 Endpage 391
Abstract
Working Hours and Cardiovascular Disease in Korean Workers: A Case-control Study: Inchul JEONG, et al. Graduate School of Public Health, Yonsei University, Republic of Korea?Objectives: Long working hours can negatively impact a worker’s health. The objective of this study was to examine the association between working hours and cardiovascular diseases (CVDs) and compare the degree of risk based on CVD subtypes in Korean workers. Methods: This study was a case-control study of the patients registered in the Occupational Cardiovascular Diseases Surveillance 2010. The cases included 348 patients diagnosed with a CVD (123 cerebral infarction, 69 intracerebral hemorrhage, 57 subarachnoid hemorrhage, 99 acute myocardial infarction). Controls were 769 participants with no history of CVDs matched for gender, age, type of occupation, and region. Participants’ working hours in the previous week and the average working hours over the past three months were assessed to examine short-term and long-term effects. Results: After adjusting for confounding factors, the odds ratios (ORs) for CVDs in the short-term were 2.66 (95% Confidence interval (CI) :1.78?3.99) for working ≤40 hours, 1.85 (95% CI: 1.22?2.81) for working 50.1?60 hours and 4.23 (95% CI: 2.81?6.39) for working >60 hours compared with the 40.1?50-hour working group. The WorkersORs in the long-term were 2.90 (95% CI: 1.86?4.52) for working ≤40 hours, 1.73 (95% CI: 1.03?2.90) for working 48.1?52 hours and 3.46 (95% CI: 2.38?5.03) for working >52 hours compared with the 40.1?48-hour working group. Conclusions: Long working hours are related to an increased risk of CVDs, and the degree of risk differs based on CVD subtype. Short working hours are also related to an increased risk for CVDs. More prospective studies targeting specific disease risks are required.
URI
http://doi.org/10.1539/joh.12-0245-OA
http://dspace.inha.ac.kr/handle/10505/31312
ISSN
1341-9145
Appears in Collections:
Medical School/College of Medicine (의학전문대학원/의과대학) > Medical Science (의학) > Journal Papers, Reports(의학 논문, 보고서)

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