common condition in late middle age - incidence increases with age
approximately twice as common in males than in females
more common in patients with blood group A
was more common in lower socio-economic groups - this seems to be changing
use of NSAIDs - associated with a three- to four-fold increase in risk of gastric ulcer
less related to Helicobacter pylori than duodenal ulcers - H. pylori can be isolated from 70% of patients with gastric ulcers compared to over 95% of patients with duodenal ulcers
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