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Self-rated health and mortality in a prospective Chinese elderly cohort study in Hong Kong
Chen Shen1, C Mary Schooling2, Wai Man Chan3
1School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
Objectives:
In the West, self-rated health reliably predicts death, but conceptualizations of health and cause-composition of mortality may be contextually specific. Little is known as to how self-rated health predicts death in non-Western settings.
Methods:
Multivariable Cox regression analysis was used to assess the adjusted associations of age-comparative and self-comparative self-rated health with death from all- and specific-causes using a population-based cohort of 66,820 Chinese (65+years) enrolled from 1998 to 2001 at 18 Elderly Health Centers in Hong Kong, and followed until May 31, 2012.
Results:
During an average of 10.9 years follow-up, 19,845 deaths occurred with 6336 from cancer. Worse age-comparative self-rated health, compared with better, was positively associated with death from all-causes (hazard ratio 1.68, 95% confidence interval 1.59, 1.77), cardiovascular disease (hazard ratio 1.83, 95% confidence interval 1.66, 2.02), stroke (hazard ratio 1.93, 95% confidence interval 1.63, 2.29), ischemic heart disease (hazard ratio 1.77, 95% confidence interval 1.51, 2.08), cancer (hazard ratio 1.17, 95% confidence interval 1.06, 1.30) and respiratory disease (hazard ratio 2.25, 95% confidence interval 2.01, 2.52), adjusted for age and sex. Self-comparative self-rated health was not associated with higher mortality.
Conclusion:
Age-comparative self-rated health predicted death in older people from a non-Western setting although the association was less marked than in Western settings.
