Jian 2004.

Study characteristics
Methods	HCC in China
Participants	Participants: 130 cases and 274 controls (all men) Inclusion criteria: aged ≥ 45 years, incident and histopathologically confirmed cases of adenocarcinoma of the prostate from 8 hospitals of Hangzhou, southeast China, residents in the Zhejiang Province, China for at least 10 years Recruitment: from July 2001‐June 2002
Interventions	N/A
Outcomes	Number of cases Prostate cancer: 130 cases (all men) of prostatic adenocarcinoma
Green tea in exposure categories	Exposure assessment A: green tea drinking habits Lowest exposure: no Highest exposure: yes Exposure assessment B: intake of green tea Lowest exposure: < 1 cup/d Intermediate exposure: 1‐3 cups/d Highest exposure: > 3 cups/d
Notes	Funding: not declared Statistical methods: conditional logistic regression Variables controlled in analysis: age at interview, locality, education, family income, BMI, physical activity, alcohol consumption, tobacco smoking, total fat intake, marital status, age at marriage, number of children, vasectomy, family history of prostate cancer Variables controlled by matching: age and geographical area Jian 2007 Subsequent report on the exact same population, controlling for lycopene intake