Kikuchi 2006

Methods	Case‐control study within a prospective cohort study in Japan
Participants	19,561 cohort participants 110 cases, sub‐cohort control
Interventions	N/A
Outcomes	Incidence Adjusted for age, BMI, alcohol, smoking, marital status, daily calorie intake (continuous), daily calcium intake, walking duration, consumption frequencies of black tea and coffee and consumption frequencies of meat
Cancer type & time of follow‐up	Prostate cancer (7 years follow‐up)
Sponsor	A grant‐in‐aid of Third Term Comprehensive Control Research for Cancer from the Ministry of Health, Labour and Welfare, Japan.
Notes	Green tea consumption (cups per day): <1 HR = 1.00 1 or 2 cups/day HR = 0.77 (95% CI, 0.42 to 1.40) 3 or 4 cups/day HR = 0.24 (95% CI, 0.69 to 1.94) ≥ 5 cups/day HR = 0.85 (95% CI, 0.50 to 1.43) p = 0.81