Montague 2012.

Study characteristics
Methods	Cohort study in China
Participants	Participants: 63,257 (male/female: 27,959/35,298) participants. Data on 27,293 men with no history of cancer Inclusion criteria: aged 45‐74 years, belonging to the Hokkien or Cantonese dialect group in Singapore, China Parent cohort: Singapore Chinese Health Study (SCHS) Recruitment: from April 1993 to December 1998
Interventions	N/A
Outcomes	Number of cases Outcome assessment: 31 December 2007 Prostate cancer: 298 cases
Green tea in exposure categories	Exposure assessment: green tea intake Lowest exposure: none Intermediate exposure 1: monthly Intermediate exposure 2: weekly Highest exposure: daily, further divided in 1 cup/d and ≥ 2 cups/d
Notes	Funding: National Institute of Health grant R01CA144034. Statistical methods: Cox proportional hazard regression Variables controlled in analysis: age, dialect group, interview year, education, BMI, smoking history and black tea intake. Variables controlled by matching: ‐