Registry CCEP participants participants (N=18,075) (N=52,216) Any of top Any of Diagnostic categories Primary seven top three (ICD-9-CM code) diagnosis diagnoses diagnoses Psychological conditions 18.4% 36.0% 15.1% Musculoskeletal system diseases 18.3 47.2 25.3 Symptoms, signs, and ill-defined conditions 17.9 43.1 19.9 Healthy 9.7 10.2 NA Respiratory system diseases 6.8 17.5 14.4 Digestive system diseases 6.3 20.4 11.4 Skin diseases 6.2 19.9 13.5 Nervous system diseases 5.7 17.8 8.3 Infectious diseases 2.6 9.0 7.1 Circulatory system diseases 2.2 8.0 7.1 Endocrine disorders 2.0 7.9 NA Genitourinary system diseases 1.3 5.4 3.4 Injury and poisoning 0.8 3.2 4.8 Neoplasms 0.8(0.3)a 2.9 0.4a Blood and blood organ diseases 0.5 3.0 NA
NA = Not available
a Malignant neoplasms (cancer) only.
SOURCES: U.S. Department of Defense, Comprehensive Clinical Evaluation Program for Persian Gulf War Veterans: CCEP Report on 18,598 Participants (Washington, DC: U.S. Department of Defense, 1996); and H.K. Kang, N.A. Dalager, and K.Y. Lee, "Health Surveillance of Persian Gulf War Veterans-A Review of the DVA Persian Gulf Registry Data," unpublished report, Department of Veterans Affairs, March 1996.