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Perforated Gastric and Duodenal Ulcer Statistics.
—In 1942 and again in 1945 Dr. Gustaf Petrén of Lund published comprehensive statistical studies of gastric and duodenal ulcers in Sweden. In Svenska Läkartidningen for April 6, 1951, he reported an investigation covering all of Sweden and drawing on the reports of 125 hospitals and various other sources. The number of cases of perforated ulcer coming to operation has increased enormously since 1930. In the five year period 1930-1934, the annual number of such cases per 100,000 inhabitants was 7.4. During the next five year period this figure had risen to 8.8, and in the six year period 1943-1948 it was up to 11.5. Again, the incidence of perforated ulcers coming to operation during the five year period 1944-1948 in a total of 28 hospitals varied greatly in accordance with whether the area concerned was urban or rural. Thus the annual incidence of
SWEDEN. JAMA. 1951;146(3):277–278. doi:10.1001/jama.1951.03670030055023
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