Risk Factors and Prevalence of Helicobacter pylori Infection in Persistent High Incidence Area of Gastric Carcinoma in Yangzhong City

Table 4

Relationships between prevalence of H. pylori infection and history of digestive diseases.

Factors	No. of subjects in Hp positive group	No. of subjects in Hp negative group	Total no. of subjects	Prevalence of Hp	OR (95% CI)	P value
History of digestive diseases	501	374	875	57.26%	0.71 (0.61–0.82)	0.000
Gastroenteritis	324	262	586	55.29%	0.67 (0.57–0.80)	0.000
Peptic ulcer	91	87	178	51.12%	0.57 (0.42–0.76)	0.000
Esophagitis	53	32	85	62.35%	0.95 (0.61–1.49)	0.838
Hepatitis	73	46	119	61.34%	0.91 (0.63–1.33)	0.636