Korean J Prev Med.
2000 Dec;33(4):459-468.
Association between BMI and Mortality: Kangwha cohort study
- Affiliations
-
- 1Department of Preventive Medicine and Public Health, College of Medicine, Ajou
University.
- 2Department of Preventive Medicine and Public Health, College of Medicine,
Yonsei University.
- 3Department of Public Health, The Graduate School of Yonsei
University.
- 4The Graduate School of Health Science and Management Yonsei
University.
- 5Yuhan College, Health Service Administration.
Abstract
OBJECTIVES
To investigate the association between BMI and Mortality.
METHODS
This study was based on the analysis and assembly of the 'Kangwha
Cohort Study', previously conducted by the Department of Preventive Medicine, Yonsei
University. A total of 2,696 males and 3,595 females were followed for almost ten years
and ten months from March 1985 to January 1996, a total of whom 2,420 died during
this period. The Cox's proportional hazards regression model was used to analyze this
data.
RESULTS
We found a U-shaped relationship between BMI and mortality among the aged
men in the Kangwha cohort. The hazard ratio of dying was adjusted for age, marital
status, occupation, self cognitive health level, chronic disease, smoking, and alcohol
frequency, then sorted by body mass index into the following groups; less than 18.5,
18.5 to less than 21.0, 21.0 to less than 23.5, 23.5 to less than 26.0 and greater than or
equal to 26. The corresponding ratios for men were 1.81(1.50-2.19, 95%CI),
1.31(1.14-1.51, 95%CI), 1.0(referent), 1.05(0.87-1.26, 95%CI) and 1.39(1.09-1.76, 95%CI),
respectively. And for women, 1.46(1.19-1.78), 1.12(0.95-1.31, 95%CI), 1.0(referent),
1.00(0.84-1.20, 95%CI) and 1.09(0.89-1.34, 95%CI), respectively.
CONCLUSIONS
The risk of death among aged men in Kangwha increased in the under
and overweight groups. The relationship between BMI and mortality has been well
studied in Western populations, but little is known about the association between BMI
and mortality in our country. So, on the basis of this study, it is apparent that more
studies of the relationship between BMI and mortality will be needed for future work.