Gastric and Duodenal Ulcer the Association Between Aspirin Ingestion, Smoking and Family History of Ulcer

1,405 workers from three organizations (950 men, 455 women) representing all age and social groups, combined with 150 previously reported in-patients (100 with gastric ulcer, 50 with duodenal ulcer). The total ulcer population (110 gastric, 98 duodenal) was compared to 1,329 workers without ulcer.

Aspirin ingestion, smoking (10 or more cigarettes per day), and family history of ulcer

Workers without ulcer (n=1,329)

Presence of gastric or duodenal ulcer