Inoue 1998.

Study characteristics
Methods	HCC in Japan
Participants	Participants: 127,477 inhabitants of 45 areas of Japan, data retrieved from 21,128 participants Inclusion criteria: aged 40‐79 years, from the Aichi Cancer Center Hospital (ACCH) in Aichi Prefecture, Japan Recruitment: from January 1988‐June 1991
Interventions	N/A
Outcomes	Number of cases Oesophageal cancer: 185 (male/female: 161/24) cases Stomach cancer: 893 (male/female: 613/280) cases Colon cancer: 362 (male/female: 213/149) cases Rectal cancer: 266 (male/female: 173/93) cases
Green tea in exposure categories	Exposure assessment: intake of green tea Lowest exposure: rarely Intermediate exposure 1: occasional Intermediate exposure 2: 1‐2 cups/d Intermediate exposure 3: 4‐6 cups/d Highest exposure: ≥ 7 cups/d
Notes	Funding: Grant‐in‐Aid for Cancer Research (9‐4) from the Ministry of Health and Welfare, Japan and a grant from the Foundation of All Japan Coffee Association Statistical methods: unconditional logistic regression Variables controlled in analysis: coffee intake, black tea intake, sex, age, year and season at 1st hospital visit, habitual smoking, habitual alcohol drinking, regular physical exercise, fruit intake, rice intake and beef intake Variables controlled by matching: ‐ Data on Aichi also reported in Inoue 2009a for stomach cancer