Chyou 1993

Methods	Case‐control study within a cohort study of Japanese population living in Hawaii, USA
Participants	7,995 cohort participants (men) 96 cases, sub‐cohort control
Interventions	N/A
Outcomes	Incidence Adjusted for age and 'relevant co‐variates' (no further description) Matching variables not described
Cancer type & time of follow‐up	Urinary bladder cancer (22 years follow‐up)
Sponsor	Grant provided by National Cancer Institute, Bethesda MD, USA
Notes	RR (95% CI) green tea consumption “almost never” = 1.00 RR (95% CI) green tea consumption “ever” = 1.34 (0.79 to 2.27) No p‐values provided