The Postwar Hospitalization Experience of U.S. Veterans of the Persian Gulf War
Gregory C. Gray, M.D., M.P.H., Bruce D. Coate, M.P.H., Christy M. Anderson, Han K. Kang, Dr.P.H., S. William Berg, M.D., M.P.H., F. Stephen Wignall, M.D., James D. Knoke, Ph.D., and Elizabeth Barrett-Connor, M.D.
Background Since the Persian Gulf War ended in 1991, many veteransof that conflict have reported diverse, unexplained symptoms.To evaluate the health of Gulf War veterans, we studied theirpostwar hospitalization experience and compared it with thatof other military personnel serving at the same time who didnot go to the Persian Gulf.
Methods Using a retrospective cohort approach and data fromDepartment of Defense hospitals, we studied hospitalizationsof 547,076 veterans of the Gulf War who were serving in theArmy, Navy, Marine Corps, and Air Force and 618,335 other veteransfrom the same era who did not serve in the Persian Gulf. Usingmultivariate logistic-regression models, we analyzed risk factorsfor hospitalization both overall and in 14 broad diagnosticcategories during three periods from August 1991 through September1993 (a total of 45 comparisons).
Results After the war, the overall odds ratio for hospitalizationof the Gulf War veterans was not higher than that of the otherveterans, even after adjustment for selection effects relatedto deployment. In 16 of the 42 comparisons involving specificdiagnoses, the risk of hospitalization among Gulf War veteransdiffered significantly from that among other veterans. Amongthese 16 comparisons, Gulf War veterans were at higher riskin 5: neoplasms (largely benign) during 1991, diseases of thegenitourinary system during 1991, diseases of the blood andblood-forming organs (mostly forms of anemia) during 1992, andmental disorders during both 1992 and 1993. The differenceswere not consistent over time and could be accounted for bydeferred care, postwar pregnancies, and postwar stress.
Conclusions During the two years after the Persian Gulf War,there was no excess of unexplained hospitalization among Americanswho remained on active duty after serving in that conflict.
Source Information
From the Clinical Epidemiology Division, Naval Health Research Center, San Diego, Calif. (G.C.G., B.D.C., C.M.A., J.D.K.); the Environmental Epidemiology Service, Department of Veterans Affairs, Washington, D.C. (H.K.K.); the Navy Environmental Health Center, Norfolk, Va. (S.W.B.); the Naval Medical Research Unit No. 2, Jakarta, Indonesia (F.S.W.); and the Department of Family and Preventive Medicine, School of Medicine, University of California San Diego, La Jolla, Calif. (E.B-C.). The views expressed in this article are those of the authors and do not reflect the official policy or position of the Department of the Navy, the Department of Defense, the Department of Veterans Affairs, or the U.S. government.Presented in part at the 123rd annual meeting of the American Public Health Association, San Diego, Calif., October 29November 2, 1995.
Address reprint requests to Dr. Gray at the Emerging Illness Research Team, P.O. Box 85122, Naval Health Research Center, San Diego, CA 92186-5122.
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