Margaret A. K. Ryan

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PURPOSE The characteristics of U.S. military personnel who use dietary supplements have not been well described. This study aimed to determine whether deployment experience and physical activity were associated with the use of bodybuilding, energy, or weight-loss supplement among U.S. military personnel. METHODS Self-reported data from active-duty,(More)
OBJECTIVE To determine if baseline functional health status, as measured by SF-36 (veterans), predicts new onset symptoms or diagnosis of post-traumatic stress disorder among deployed US military personnel with combat exposure. DESIGN Prospective cohort analysis. SETTING Millennium Cohort. PARTICIPANTS Combat deployed members who completed baseline(More)
The Jet Propulsion Laboratory has recently developed and built an electronic nose (ENose) using a polymer-carbon composite sensing array. This ENose is designed to be used for air quality monitoring in an enclosed space, and is designed to detect, identify and quantify common contaminants at concentrations in the parts-per-million range. Its capabilities(More)
BACKGROUND Respiratory syncytial virus (RSV) infection is a potentially important cause of acute respiratory illness in many populations, including military recruits receiving basic training. Understanding the full impact of RSV infection is challenging because of difficulties in diagnosis and the limitations of past epidemiologic studies. In this study, we(More)
Sound communication, by means of substrate-borne vibrations, was recorded and analysed from a Slovenian and Australian population of the pentatomid landbug, Nezara viridula. Mate location and short-range courtship in N. viridula involves the recognition of such species-specific signals and responding appropriately to them. Temporal parameters of all N.(More)
OBJECTIVE Evaluate the rate of, and risk factors for, abusive head trauma (AHT) among infants born to military families and compare with civilian population rates. METHODS Electronic International Classification of Diseases data from the US Department of Defense (DoD) Birth and Infant Health Registry were used to identify infants born to military families(More)
The objective of this study was to define the risk of hearing loss among US military members in relation to their deployment experiences. Data were drawn from the Millennium Cohort Study. Self-reported data and objective military service data were used to assess exposures and outcomes. Among all 48,540 participants, 7.5% self-reported new-onset hearing(More)
The objective of this study was to prospectively assess the association between deployment in support of the operations in Iraq and Afghanistan and newly reported lupus and rheumatoid arthritis while also considering the effects of demographic, behavioral, and occupational characteristics. A total of 77,047 (2001-2003) and 31,110 (2004-2006) participants(More)
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