Li 2011a.

Study characteristics
Methods	PCC and HCC in China
Participants	Participants: 540 (male/female: NR) cases, 540 (male/female: NR) population controls and 540 (male/female: NR) hospital controls Inclusion criteria: aged 18‐85 years, participants with histopathology and haematology cancer diagnosed at the First Hospital of China Medical University from permanent residents of urban Shenyang, China Recruitment: from August 2009‐July 2010
Interventions	N/A
Outcomes	Number of cases Total (any) cancer: 425 (male/female: NR) cases Breast cancer: 224 (male/female: NR) cases Colorectal cancer: 175 (male/female: NR) cases Leukaemia: 26 (male/female: NR) cases
Green tea in exposure categories	Exposure assessment A: green tea intake Lowest exposure: never or seldom Highest exposure: ≥ 1 time/d Exposure assessment B: dried green tea leaves Lowest exposure: 0 g/year Intermediate exposure: 500‐< 1000 g/year Highest exposure: ≥ 1000 g/year
Notes	Funding: National Health and Medical Research Council of Australia project grant (APP ID 572542) Statistical methods: (un)conditional logistic regression Variables controlled in analysis: education, BMI 5 years ago, smoking, passive smoking, alcohol consumption, physical activity, energy intake, cancer in first‐degree relative Variables controlled by matching: sex and age (± 5 years)