抄録
From the data of 3, 151 peptic ulcer patients confirmed radiologically and/or surgically in 138 medical and 53 surgical clinics of university and other large hospitals in almost all areas in Japan during a nine month period of 1956, the following results concerning the environmental factor of peptic ulcer were obtained.
1. Duodenal ulcer is more frequent in professional, administrative, business and transport workers and students, and gastric ulcer in salesmen, agricultural, forestry and fishery workers and housewives.
2. The patients of the upper social class are more frequent in the chronic than in the acute ulcer.
3. Though the incidence of peptic ulcer in general is high in the educated class, duodenal ulcer is exceedingly frequent in persons who have received a higher education.
4. As for the ABO blood groups, the patients suffering from peptic ulcer show an increased incidence in group 0 and a correspondingly lower incidence in group A.
5. Pyknic type is relatively frequent in duodenal ulcer, leptosome type in gastric ulcer and athletic type in coexisting ulcers in the stomach and duodenum, though the constitutional type does not play an important part in the pathogenesis of peptic ulcer.
6. In peptic ulcer the heavy eater seems to be slightly more frequent. The light eater is relatively common in the chronic form and in ulcers of the corpus, antrum and pylorus of the stomach.
7. Habit of eating at irregular intervals is exceedingly frequent in the peptic ulcer patients. Habits of eating hot food and eating rapidly are also common.
8. Peptic ulcer has no or only a slight relation to drinking habit of alcohol.
9. Smoking habit is connected with the chronicity of peptic ulcer, though it is questionable that smoking is related to the occurrence of peptic ulcer.
10. Concerning the caffeine drinks a peculiar finding related to peptic ulcer is hardly observed.
11. The frequency of pregnancy seems to be less frequent in the female peptic ulcer patients than in the average.
