Study	Reason for exclusion
Choi 2014	Trial of people undergoing endoscopic mucosal resection of gastric cancer
Fischbach 2001	No incident gastric cancers detected during follow‐up
Fischbach 2009	Did not compare the interventions of interest
Ford 2005	No gastric cancer data, follow‐up study of Moayyedi 2000 whose primary objective was to study the effect of H. pylori eradication therapy on dyspepsia in the community
Fukase 2008	Trial of people undergoing endoscopic mucosal resection of gastric cancer
Hamajima 2002	Not a RCT
Harvey 2004	No gastric cancer data. Primary objective was to study the effect of H. pylori eradication therapy on dyspepsia in the community
Hsu 2007	Prospective follow‐up study, not RCT
Imanzadeh 2004	No gastric cancer data
Juibari 2003	Not a RCT
Kamangar 2006	Case control study, not RCT
Kato 2006	Cohort study, not RCT
Kim 2008	Cohort study, not RCT
Lane 2006	No gastric cancer data, duplicate publication of Harvey 2004, whose primary objective was to study the effect of H. pylori eradication therapy on dyspepsia in the community
Mabe 2009	Cohort study, not RCT
Mason 2002	No gastric cancer data, cost‐effectiveness analysis of Moayyedi 2000, whose primary objective was to study the effect of H. pylori eradication therapy on dyspepsia in the community
Miehlke 2001	No incident gastric cancers detected during follow‐up
Moayyedi 2000	No gastric cancer data. Primary objective was to study the effect of H. pylori eradication therapy on dyspepsia in the community
Ogura 2008	Cohort study, not RCT
Ohkusa 2001	Not RCT, reported data for glandular atrophy and intestinal metaplasia
Take 2005	Cohort study, not RCT
Take 2007	Cohort study, not RCT
Takenaka 2007	Cohort study, not RCT
Uemura 2001	Cohort study, not RCT
Uemura 2002	Cohort study, not RCT
Wildner‐Christensen 2003	No gastric cancer data. Primary objective was to study the effect of H. pylori eradication therapy on dyspepsia in the community
Yanaoka 2009	Cohort study, not RCT

RCT: randomised controlled trial