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

Authors
 Inchul Jeong  ;  Jeongbae Rhie  ;  Inah Kim  ;  Innshil Ryu  ;  Pil Kyun Jung  ;  Yoo Seok Park  ;  Yong-Su Lim  ;  Hyoung-Ryoul Kim  ;  Shin-Goo Park  ;  Hyoung-June Im  ;  Mi-Young Lee  ;  Jong-Uk Won 
Citation
 JOURNAL OF OCCUPATIONAL HEALTH, Vol.55(5) : 385-391, 2013 
Journal Title
 JOURNAL OF OCCUPATIONAL HEALTH 
ISSN
 1341-9145 
Issue Date
2013
MeSH
Cardiovascular Diseases/epidemiology ; Cardiovascular Diseases/etiology* ; Case-Control Studies ; Female ; Humans ; Incidence ; Logistic Models ; Male ; Middle Aged ; Occupational Diseases/epidemiology ; Occupational Diseases/etiology ; Personnel Staffing and Scheduling/statistics & numerical data* ; Population Surveillance/methods ; Prospective Studies ; Republic of Korea/epidemiology ; Risk Factors ; Time Factors ; Work Schedule Tolerance/physiology* ; Work Schedule Tolerance/psychology
Keywords
Cardiovascular Diseases/epidemiology ; Cardiovascular Diseases/etiology* ; Case-Control Studies ; Female ; Humans ; Incidence ; Logistic Models ; Male ; Middle Aged ; Occupational Diseases/epidemiology ; Occupational Diseases/etiology ; Personnel Staffing and Scheduling/statistics & numerical data* ; Population Surveillance/methods ; Prospective Studies ; Republic of Korea/epidemiology ; Risk Factors ; Time Factors ; Work Schedule Tolerance/physiology* ; Work Schedule Tolerance/psychology
Abstract
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 ORs 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.
Files in This Item:
T201304103.pdf Download
DOI
10.1539/joh.12-0245-OA
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Emergency Medicine (응급의학교실) > 1. Journal Papers
4. Graduate School of Public Health (보건대학원) > Graduate School of Public Health (보건대학원) > 1. Journal Papers
Yonsei Authors
Kim, In Ah(김인아)
Park, Yoo Seok(박유석) ORCID logo https://orcid.org/0000-0003-1543-4664
Won, Jong Uk(원종욱) ORCID logo https://orcid.org/0000-0002-9200-3297
Ryu, Inn Shil(유인실)
Jeong, In Cheol(정인철)
Jung, Pil Kyun(정필균)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/88540
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