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Socioeconomic Indicators and Cardiovascular Disease Incidence Among Japanese Community Residents: The Jichi Medical School Cohort Study

  • Kaori HonjoEmail author
  • Akizumi Tsutsumi
  • Kazunori Kayaba
  • The Jichi Medical School Cohort Study Group
Article

Abstract

Background

There has been little research in inequalities in risk of cardiovascular disease incidence by social class in Asia.

Purpose

The purpose of this study was to examine the association between socioeconomic indicators and risk of stroke and coronary heart disease in Japan.

Method

Data from the Jichi Medical School Study, a population-based prospective cohort study of approximately 11,000 Japanese men and women, were used. The average follow-up period was 11.7 years. Age- and area-adjusted hazard ratios with 95% confidence intervals (CIs) for education level/occupation were calculated using Cox proportional hazard regression analysis.

Results

Compared to those who completed education at age 14 or younger, the age and area-adjusted hazard ratios of intraparenchymal hemorrhage incidence for men who completed education at age 15–17 and at age 18 or older were 0.42 (95% CI, 0.21–0.84) and 0.34 (95% CI, 0.14–0.84), respectively. The age- and area-adjusted hazard ratios of intraparenchymal hemorrhage and subarachnoid hemorrhage incidence for female white-collar workers compared to female blue-collar workers were 0.28 (95% CI, 0.08–0.98) and 3.23 (95% CI, 1.29, 8.01), respectively. No associations were found between education level and risk of coronary heart disease among both men and women.

Conclusion

These results suggest the pattern of social inequalities in health in Japan might be different from that in Western countries.

Keywords

Cardiovascular disease Educational status Incidence Japan Occupations 

Notes

Acknowledgments

This study was partly supported by a grant-in-aid from the Foundation for the Development of the Community, Tochigi, Japan, and by a Grant-in-Aid for Scientific Research (C).

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Copyright information

© International Society of Behavioral Medicine 2009

Authors and Affiliations

  • Kaori Honjo
    • 1
    • 4
    Email author
  • Akizumi Tsutsumi
    • 2
  • Kazunori Kayaba
    • 3
  • The Jichi Medical School Cohort Study Group
  1. 1.Public Health, Department of Social and Environmental Medicine, Graduate School of MedicineOsaka UniversitySuitaJapan
  2. 2.Occupational Health Training CenterUniversity of Occupational and Environmental HealthFukuokaJapan
  3. 3.School of Health and Social ServicesSaitama Prefectural UniversityKoshigayaJapan
  4. 4.Public Health, Department of Social and Environmental HealthOsaka University Graduate School of MedicineOsakaJapan

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