EDITORIAL SYNOPSIS This paper compares the mortality of 525 men admitted to U.S. Army hospitals in 1944 with ulcerative colitis compared with 518 controls matched for age, race, and rank. The excess mortality in the ulcerative colitis group as compared with the control group was due to approximately equal proportions of deaths from ulcerative colitis (2-9 %) and cancer of the caecum, colon, and rectum (3-2 %). The mortality from ulcerative colitis occurred mainly in the first and immediately subsequent years after diagnosis while most of the deaths from cancer occurred in later years. A striking correlation is shown between bad prognosis and the extent of radiological involvement of the colon in 1944.
MATERIALS AND METHODSSAMPLING Five hundred and twenty-five individuals were selected from among the admissions to Army hospitals2 for ulcerative colitis during 1944. Those selected were the males with at least 90 days of Army service who had not already been admitted to an Army hospital at which a diagnosis of ulcerative colitis was made. The symptoms at the onset of the illness and at the reference point, i.e., the date of admission to hospital, and clinical procedures carried out during the period in hospital have been described elsewhere (Acheson and Nefzger, 1963).Controls were selected from a 0 1 % sample of all males discharged from the Army to civil life during the interval between 1944 and 30 June 1947. They were matched individually to ulcerative colitis cases on the basis of age, race, and rank and were required to have been on active duty with the Army on the day when the matched case was admitted to hospital (Acheson and Nefzger, 1963).