Cardiovascular Diseases Clinical Trial
To examine the prospective association of green tea consumption to the incidence and mortality of coronary heart disease (CHD) using multivariate analysis while controlling for the potential confounding effects of cholesterol, triglycerides, glucose and dietary nutrients.
BACKGROUND:
Both in vivo and in vitro experiments have show that flavonoids, antioxidants which are rich
in green tea, are potentially as beneficial as vitamin E, beta-carotene and vitamin C in
reducing the risk of cardiovascular disease. Thus, the possible preventive effects of green
tea on CHD have begun to raise research interests in green tea sufficiently to inquire about
its beneficial effects formally in humans. However, few epidemiologic studies have been
carried out to directly examine the effects of green tea on CHD. The Honolulu Heart Program
(HHP) is a 30 year longitudinal study of CHD and stroke among 8,006 Japanese American men
living on Oahu Hawaii. Until the end of 1992, 1,888 men from this cohort were defined as
having incident CHD; this includes 396 deaths due to CHD. The baseline examination for the
HHP was conducted during 1965-68. A comprehensive physical examination and 24 hour dietary
recall interview were administered. Within the original cohort more than 75 percent men
reported to have drunk green tea daily. The amount consumed per day varied considerably from
low to high doses. The high prevalence of green tea consumption coupled with dose
information (i.e low, moderate and high consumption) provides good opportunities to examine
the relationships of green tea consumption and CHD.
DESIGN NARRATIVE:
The study uses the Honolulu Heart Program data to examine the prospective association of
green tea consumption to the incidence and mortality of CHD using multivariate analysis
while controlling for the potential confounding effects of cholesterol, triglycerides,
glucose and dietary nutrients.
The study completion date listed in this record was obtained from the "End Date" entered in
the Protocol Registration and Results System (PRS) record.
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