An Assessment of Technical Issues Raised in R.W. Haley's Critique of Three Studies of Health Effects of the Gulf War
In a 1998 article in the American Journal of Epidemiology, R.W. Haley challenged the validity of three government-sponsored studies that found that military personnel deployed to the Persian Gulf region in connection with the 1991 Gulf War experienced no excess risk of adverse health effects. The three studies, which were published in the New England Journal of Medicine in 1996 and 1997, used multivariate statistical procedures to contrast postwar rates of death, hospitalization, and birth defects among Gulf War veterans with those for other military personnel who were deployed elsewhere. Haley claimed that the authors' statistical methods were flawed and their findings were distorted by various biases. The three authours published rebuttals to Haley and Haley also prepared a response to their reply all in the same issue of the American Journal of Epidemiology.
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adjusted mortality rate adjustment reactions adverse health effects attributable to Gulf authors basis for Haley's birth defect studies calculating cause-specific mortality rates cell counts civilian confidence interval endpoints criticisms crude and adjusted death counts deaths attributed deployed and nondeployed diseases effects of Gulf Epidemiol 1998 excess risk externally caused death fpc factors Gray GC Gulf War deployment Gulf War illness Gulf War veterans Haley's formula Haley's supposition hazard rate healthy-warrior effect higher risk ratios hospitalization rates hospitalization study interval estimate Journal of Epidemiology Kang and Bullman logistic regression Medicine in 1996 military mortality rate ratios motor vehicle accidents nondeployed groups nondeployed veterans numbers of deaths Persian Gulf Persian Gulf War personnel population means R.W. Haley's critique rates among Gulf relative risk ratios reported responses to Haley's risk factors September 1993 statistical statisticians Stochastic Processes Studies of Health superpopulation models support Haley's three studies unequal follow-up Var(In warrior effects