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Mortality in the JACC study till 1999.
Yoshiyuki Watanabe1, Kotaro Ozasa, Junko Nagura
1Department of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Japan. watanabe@koto.kpu-m.ac.jp
Journal of Epidemiology
|May 11, 2005
Summary
The Japan Collaborative Cohort Study found that participants had lower mortality rates from all causes and cancers compared to the general Japanese population. This large cohort study highlights the health status of its members over a decade.
Area of Science:
- Epidemiology
- Public Health
- Cancer Research
Background:
- The Japan Collaborative Cohort Study (JACC Study) has been ongoing since 1988.
- This study evaluates cancer risk and mortality in a large Japanese population cohort.
Purpose of the Study:
- To describe mortality patterns in the JACC cohort from 1988-1999.
- To compare JACC cohort mortality, particularly cancer deaths, with the general Japanese population.
- To analyze mortality causes by geographical district within the cohort.
Main Methods:
- A follow-up study of 110,792 Japanese inhabitants aged 40-79 years.
- Data collection spanned from 1988-1990 with follow-up until the end of 1999 (approx. 10 years).
Main Results:
- Follow-up data analyzed for 46,465 males and 64,327 females.
- Cancer death proportions in the cohort were similar to the general Japanese population (1995).
- Sex-specific standardized mortality ratios for total and cancer deaths were below 100 for both sexes.
Conclusions:
- JACC cohort members exhibited similar or slightly better health outcomes than the general population.
- The cohort showed a lower likelihood of death from all causes and cancers.