Factors associated with psychiatric evacuation among service members deployed to Operation Enduring Freedom and Operation Iraqi Freedom, January 2004 to September 2010.

OBJECTIVES: To calculate the annual rate of psychiatric evacuation of U.S. Service members out of Iraq and Afghanistan and identify risk factors for evacuation. METHODS: Descriptive and regression analyses were performed using deployment records for Service members evacuated from January 2004 through September 2010 with a psychiatric diagnosis, and a 20% random sample of all other deployers (N = 364,047). RESULTS: A total of 5,887 deployers psychiatrically evacuated, 3,951 (67%) of which evacuated on first deployment. The rate increased from 72.9 per 100,000 in 2004 to 196.9 per 100,000 in 2010. Evacuees were overrepresented in both combat and supporting duty assignments. In multivariate analysis, Army active duty had the highest odds of evacuation relative to Army National Guard (adjusted odds ratio [AOR] 0.852, 95% confidence interval [CI] 0.790-0.919), Army Reserve (AOR 0.825, 95% CI 0.740-0.919), and all other components. Accessions in 2005 had the highest risk (AOR 1.923, 95% CI 1.621-2.006) relative to pre-2001 accessions. CONCLUSIONS: Risk for psychiatric evacuation is highest among the Army Active Component. A strong link between multiple deployments or combat-related exposure and psychiatric evacuation is not apparent. Increased risk among post-2001 accessions suggests further review of changes in recruitment, training, and deployment policies and practices.

Impact of the 2009 influenza (H1N1) pandemic on the United States military health care system.

BACKGROUND: During public health emergencies, the Military Health System experiences challenges similar to those across the U.S. public and private health systems. This study explored how 1 such event, the 2009/2010 influenza (H1N1) pandemic, impacted health care utilization and associated costs in the Military Health System. METHODS: Data from the Military Data Repository were used to examine diagnoses, claims data, and dates of services with respect to military or civilian care during 2004-2009/2010 influenza seasons. Comparison analysis was conducted through two-tailed t-tests and regression models. RESULTS: There was a significant increase in inpatient and outpatient health care utilization during the 2009/2010 H1N1 pandemic year, most markedly for emergency department visits. The 2009/2010 H1N1 pandemic cost the Department of Defense $100 million compared to influenza-related health care costs incurred in previous influenza seasons. Highest health care utilization costs were found in children less than age 5. The greatest cost burden was attributed to immunizations for active duty personnel delivered at military facilities. CONCLUSION: Annual trend analysis of costs and health care utilization would be helpful to plan and resource emerging influenza pandemics and to identify subgroups at greatest risk for contracting influenza.