Tea Consumption and Mortality in the Oldest-Old Chinese
Article first published online: 1 OCT 2013
© 2013, Copyright the Authors Journal compilation © 2013, The American Geriatrics Society
Journal of the American Geriatrics Society
Volume 61, Issue 11, pages 1937–1942, November 2013
How to Cite
J Am Geriatr Soc 61:1937–1942, 2013.
- Issue published online: 12 NOV 2013
- Article first published online: 1 OCT 2013
- National Institutes of Health. Grant Number: 5R01-AG023627
- National Natural Sciences Foundation of China. Grant Numbers: 71110107025, 71233001, 71103006
- oldest-old Chinese;
- longitudinal study
To investigate the association between tea consumption and mortality in the oldest-old Chinese.
Population-based longitudinal data from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) were analyzed using a Cox semiparametric proportional hazard model.
Six hundred thirty-one randomly selected counties and cities of China's 22 provinces.
Individuals aged 80 and older (N = 9,093) who provided complete data in the baseline survey (1998).
Self-reported current frequency of tea drinking and past frequency at approximately age 60 were ascertained at baseline survey; a follow-up survey was conducted 2000, 2002, and 2005.
In the oldest-old Chinese, tea consumption was associated with lower risk of mortality after adjusting for demographic characteristics, socioeconomic status, health practices, and health status. Compared with non-tea drinkers, the adjusted hazard ratio (HR) was 0.90 (95% confidence interval (CI) = 0.84–0.96) for daily tea drinkers (at the baseline survey, 1998) and 1.00 (95% CI = 1.01–1.07) for occasional tea drinkers (P for linear trend .003). Similar results were found when tea drinking status at age 60 was used in the analysis. Further analysis showed that subjects who reported frequent tea drinking at age 60 and at the baseline survey had a 10% lower risk of mortality than subjects who reported infrequent tea drinking at age 60 and at the baseline survey (HR = 0.90, 95% CI = 0.84–0.97).
Tea consumption is associated with lower risk of mortality in the oldest-old Chinese.