Xu 2007.

Study characteristics
Methods	PCC in China
Participants	Participants: 1204 cases and 1212 controls (all women) Inclusion criteria: aged 30‐69 years, medical confirmed cases from Shanghai Cancer Registry with no history of cancer or hysterectomy, within the Shanghai Endometrial Cancer Study Recruitment: from 1997‐2003
Interventions	N/A
Outcomes	Number of cases Endometrial cancer: 1204 cases (all women)
Green tea in exposure categories	Exposure assessment: green‐tea drinking habit Lowest exposure: never Highest exposure: primarily green tea drinking (≥ 3 times/week for ≥ 6 months)
Notes	Funding: USA Public Health Service grant R01CA92585 from the National Cancer Institute Statistical methods: unconditional logistic regression Variables controlled in analysis: age, education, menopausal status, years of menstruation, number of pregnancies, diagnosis of diabetes, alcohol consumption, BMI, physical activity, energy intake and total fruit and vegetable intake and soy protein intake Variables controlled by matching: age (± 5 years)