Table 1.

Distribution of H pylori isolation rates in different types of gastric and duodenal diseases.

Types of diseases	Tested cases	H pylori isolation positve cases	Positive rate (%)
Chronic gastritis	88	68	77.3
Superficial	58	48	82.8
Active	15	10	75
Atrophy	15	10	75
Peptic ulcer	69	57	82.6
Gastric	16	12	77.3
Duodenal	46	39	84.7
Gastric + Duodenal	7	6	85.7
Total	157	125	79.6