Common mental disorders among US army aviation personnel: Prevalence and return to duty.

OBJECTIVES: Assess the prevalence of US Army aviation personnel with common mental disorders, the percentage that return to duty following mental health treatment, and predictors of return to duty. METHODS: Examined the prevalence over a 5-year period. The percentage of personnel who were granted a waiver to return to flying duty following treatment was also determined. RESULTS: The results revealed a 5-year prevalence of 0.036 (95% CI = 0.034-0.038) for personnel experiencing one or more of the mental disorders (N = 1,155). Prevalence was highest for adjustment disorders and for nonpilot participants. Overall, personnel were granted a waiver 55.3% of the time and suspended or disqualified 44.7% of the time. Waivers were more likely to be granted for an adjustment disorder and for pilots. CONCLUSIONS: Discussion focuses on the importance of aviation personnel receiving mental health treatment when problems are not severe to maximize the likelihood of returning to duty.

Assessing the safety of anthrax immunization in US Army aircrew members via physical examination.

OBJECTIVE: Anthrax in weaponized form is the bioterrorism agent of most concern. Questions raised about the safety of the anthrax vaccine can be addressed by comparing immunized and unimmunized people in population-based studies. METHODS: A retrospective evaluation of data from periodic physical examinations collected on anthrax-immunized and -unimmunized US Army aircrew members between 1998 and 2005 was performed to evaluate the safety of anthrax immunization. Mean changes in variables found on physical examination and laboratory analysis were compared by use of t tests. Multiple linear regression predicted change in outcome from baseline characteristics. RESULTS: We compared 6,820 immunized subjects and 4,145 unimmunized controls based on US Army aircrew physical examination and screening laboratory tests. No association between anthrax immunization and a clinically relevant change in a tested physiologic parameter was detected. CONCLUSIONS: No attributable risk of anthrax immunization was observed in this group of Army aircrew members.