Accuracy of Diagnostic Codes for Identifying Patients with Ulcerative Colitis and Crohn’s Disease in the Veterans Affairs Health Care System

Validation of VA Administrative Data Algorithms for Identifying Cardiovascular Disease Hospitalization

(2013) Kurt Niesner et al.   EPIDEMIOLOGY

The Incidence and Prevalence of Inflammatory Bowel Disease Among U.S. Veterans

(2013) Jason K. Hou et al.   INFLAMMATORY BOWEL DISEASES

Hospitalisations and surgery in Crohn's disease

(2012) Charles N Bernstein et al.   GUT

Risk of colorectal cancer among Caucasian and African American veterans with ulcerative colitis*

(2011) Jason K. Hou et al.   INFLAMMATORY BOWEL DISEASES

Validity of PTSD diagnoses in VA administrative data: Comparison of VA administrative PTSD diagnoses to self-reported PTSD Checklist scores

(2011) Amy A. Gravely et al.   JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT

The Natural History of Adult Crohn's Disease in Population-Based Cohorts

(2009) Laurent Peyrin-Biroulet et al.   AMERICAN JOURNAL OF GASTROENTEROLOGY

Validation of ICD-9-CM Diagnostic Codes for Inflammatory Bowel Disease Among Veterans

(2009) Selvi Thirumurthi et al.   DIGESTIVE DISEASES AND SCIENCES

Direct Health Care Costs of Crohn's Disease and Ulcerative Colitis in US Children and Adults

(2008) Michael D. Kappelman et al.   GASTROENTEROLOGY