Diet, H pylori infection and gastric cancer: Evidence and controversies

Table 5 Epidemiological studies (cohort nested case-control study) on association between H pylori infection and GC risk

Author	Yr	Geographic area	Case/Control n	OR (95% CI)	Mean follow-up (yr)
Nomura AM124	1991	USA	109/109	6.0 (2.1-17.3)	12
Parsonnet J125	1991	USA	109/109	3.6 (1.8-7.3)	14.2
Forman D126	1991	England	116/484	2.7 (1.0-7.9)	15
Parsonnet J127	1993	USA	136/136	2.62 (1.47-4.69)	21
Blaser MJ128	1995	USA	102/102	1.45 (0.76-2.80)	3
Lin JT129	1995	China, Taiwan	29/220	1.13 (0.81-1.58)	13
Aromaa A130	1996	Finland	80/146	1.50 (0.70-3.22)	6
Webb PM131	1996	China	87/261	0.93 (0.57-1.54)	40
Siman JH132	1997	Sweden	56/224	5.00 (2.20-11.5)	5.7
Watanabe Y133	1997	Japan	45/225	1.84 (1.54-5.72)	8
1Yuan JM°134	1999	China	188/548	1.84 (1.08-3.11)	12
Hansen S135	1999	Norvay	208/208	5.15 (2.83-9.37)	13
You WC136	2000	China	34/2594	1.8 (1.20-2.60)	4.5
Tulinius H137	2001	Iceland	23/128	1.16 (1.05-1.28)	20
Siman JH138	2001	Sweden	56/224	5.0 (2.2-11.2)	5.7
Limburg P139	2001	China	92/192	2.29 (1.26-4.14)	15
Nomura AM140	2002	Hawaii	261/261	2.70 (1.30-5.6)	25
Kosunen TU141	2005	Finland	363/4854	2.49 (1.86-3.34)	24
Shin A142	2005	Korea	86/344	1.06 (0.80-1.40)	2.6
Knekt P143	2006	Finland	225/435	3.12 (1.97-4.95)	15

¹Re-evaluation of the Webb study with ELISA developed and validated among Shanghai residents.