Gao 1994

Methods	Case‐control study, population‐based in China
Participants	902 cases, 1,552 controls
Interventions	N/A
Outcomes	Association of green tea consumption with cancer risk Matched according to sex and age Adjusted for age, smoking, alcohol, education, birthplace
Cancer type & time of follow‐up	Esophageal cancer
Sponsor	Not declared
Notes	Men:   1 to199 tea leaves in grams/month OR = 0.79 (95% CI, 0.53 to 1.17) ≥200 tea leaves in grams/month OR = 0.79 (95% CI, 0.56 to 1.13) p = 0.20 Women: 1 to 149 tea leaves in grams/month OR = 0.77 (95% CI, 0.39 to 1.53) ≥150 tea leaves in grams/month OR = 0.34 (95% CI, 0.17 to 0.69) p<0.01