Table 2.

Prevalence of both Helicobacter pylori negative and positive gastritis in patients with inflammatory bowel disease in different populations

CD	UC	C	Control group	Biopsies	H. pylori (+) gastritis (%)	H. pylori (-) gastritis (%)	Ref.
37	43	41	Non-IBD patients	Antrum, body	CD: 27, UC: 37.2 C: 53.7	CD: 29.6, UC: 22.2 C: 10.5	[61]
141	79	141	Non-IBD patients	Antrum, angulus, body	CD: 33, UC: 47 C: 60	CD: 43, UC: 12 C: 19	[34]
75	0	200	CD-free patients	Antrum, body	CD: 33.3, UC: NA C: 48	CD: 39, UC: NA C: 0.8	[50]
208	280	4943	Non-IBD patients	Antrum, body	CD: 4, UC: 6 C: 7	CD: 5, UC: 0 C: 0	[63]
67	41	43	Healthy subjects	Antrum, body	CD: 17.6, UC: 6.4 C: 20	CD: 45.4 , UC: 15.6 C: 30	[33]
62	0	0	NA	Antrum, corpus	CD: 9.7, UC: NA C: NA	CD: 32 , UC: NA C: NA	[64]

CD: Crohn’s disease; UC: Ulcerative colitis; C: Controls; IBD: Inflammatory bowel disease; H. pylori: Helicobacter pylori; NA: Not applicable.