Kato 1990a

Methods	Case‐control study, Population‐based in Japan
Participants	746 cases, 578 controls
Interventions	N/A
Outcomes	Association of green tea consumption with cancer risk Matched for age, sex and municipality Adjusted for age, gender and residence
Cancer type & time of follow‐up	Colorectal cancer
Sponsor	Grant‐in‐Aid for Cancer Research, Ministry of Health and Welfare, Japan
Notes	Daily green tea drinkers versus less than daily green tea drinkers: Colon cancer RR = 0.61 (95%CI, 0.41 to 0.91) Rectal cancer RR = 1.32 (95% CI, 0.78 to 2.23) No p‐values provided