Hospitalizations for Inflammatory Bowel Disease Among US Military Veterans 1975–2006 |
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Authors: | Amnon Sonnenberg Peter A Richardson and Neena S Abraham |
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Institution: | (1) Portland VA Medical Center and Oregon Health & Science University (AS), P3-GI, 3710 SW US Veterans Hospital Road, Portland, OR 97239, USA;(2) Houston Center for Quality of Care & Utilization Studies (PAR, NSA), Houston, TX, USA;(3) Michael E. DeBakey Veterans Affairs Medical Center and Baylor College of Medicine (PAR, NSA), Houston, TX, USA |
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Abstract: | Background The Department of Veterans Affairs (VA) is the largest healthcare system in the United States. The VA database was used to
analyze patterns of hospitalization for inflammatory bowel disease (IBD) among US military veterans. Methods The study used the VA Patient Treatment File (PTF) between 1975 and 2006. Each hospital record extracted from the PTF included
diagnosis, patient age, and ethnicity. Patient age was analyzed in three age groups: 0–44, 45–64, and 65+. Patient ethnicity
was analyzed by two broad categories as white and nonwhite. Results Among veterans, Crohn’s disease was more common than ulcerative colitis and both diseases were more common in whites than
in nonwhites. During the past 30 years, the age distributions of both diseases have shifted towards older patients who have
come to represent an increasingly larger fraction of patients with Crohn’s disease, as well as ulcerative colitis. Hospitalization
rates for inflammatory bowel disease among whites recently declined, while most rates among nonwhites continued to rise throughout
the observation period. Conclusion The present study revealed a time-dependent shift towards older ages in the age distribution of IBD among hospitalized veterans.
These changes, which have been observed similarly in other US statistics, may reflect a birth-cohort phenomenon underlying
the long-term time trends of IBD. |
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Keywords: | Crohn’ s disease Epidemiology Incidence Prevalence Ethnicity Time trends Ulcerative colitis Veterans population |
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