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THE SYSTOLIC BLOOD PRESSURE IN DUODENAL AND IN GASTRIC ULCER:  A STATISTICAL STUDY

HOWARD R. HARTMAN, M.D.; GEORGE E. BROWN, M.D.
Arch Intern Med (Chic). 1929;44(6):843-855. doi:10.1001/archinte.1929.00140060058006.
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This study was undertaken with the hope of determining whether or not patients suffering from duodenal or gastric ulcer have low systolic blood pressures. The data were compiled from the records of patients with duodenal or gastric ulcer examined in the Mayo Clinic by a diversified but well trained group of internists. Thus, multiple personal equations are expressed in the readings of blood pressure. No reading was taken with the subject under consideration in mind. The readings were impersonally recorded, by the auscultatory method, usually with the patient in the sitting position, using a spring sphygmomanometer. These instruments are corrected for variations against a mercury sphygmomanometer every seven days, so that it would be impossible to have a gross mechanical error in reading. The readings were recorded immediately on a history sheet, and from these records the charts were compiled and curves constructed. This work was done by a statistician

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