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The evaluation of health risks among the public as a consequence of exposure to radioactive fallout from nuclear testing has been an important area of research for many years by investigators in the Radiation Epidemiology Branch (REB). As a result of the reputation of this group in the field of dose and risk assessment related to radioactive fallout, and the expertise of the National Cancer Institute (NCI) in cancer research, in 2007, U.S. Senator Jeff Bingaman (D, NM) sent a request to the NCI to evaluate the health risks to New Mexico residents from the first nuclear bomb test (named Trinity) that was conducted in 1945 in south-central New Mexico. The NCI responded in early 2008 with a preliminary evaluation of the radiation doses received by the residents of New Mexico. However, the evaluation made no special provisions for lifestyles and diets of tribal community members or Hispanics\Latinos which were a significant part of the population. Little is known about Native American and Hispanic\Latino lifestyles and diets in the mid-twentieth century, yet such data are necessary to produce a credible assessment of health risks to the state s population. For this reason, REB investigators did not publish the initial dose assessment in the peer-reviewed literature. Additionally, since statewide health records cannot be reconstructed in a meaningful way to determine excess disease rates, estimation of health risks in this population can only be projected (i.e., estimated) based on the magnitude and distribution of radiation doses received and the relationships between radiation dose and cancer risks observed in other populations. Since the preparation of the 2008 report, the REB exposure assessment models used to assess doses from radioactive fallout from other nuclear test sites have been improved and published in the peer-reviewed literature. The required improvements in the 2008 Trinity assessment that would support publication of the projected health risks includes sex- and age-dependent diet and lifestyle models for Native Americans and Hispanics\Latinos in New Mexico in the mid-1940s. We are proposing a pilot study to collect, via individual interviews, information on lifestyle and diet from up to 9 key informants of Native Americans and Hispanics\Latinos living in New Mexico who were alive at the time of the bomb (currently greater than or equal to 69 years old). This data will inform the design of a larger study, which will collect lifestyle and diet information from a series of targeted focus groups. The information acquired from these 9 individual interviews will be used to 1) determine the feasibility of assembling focus groups of members of tribal and Hispanic\Latino communities in New Mexico who were alive in 1945 at the time of the bomb and 2) provide lifestyle and diet information to be used for refining focus group interviewing tools.
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