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Helical CT scans reduce lung cancer mortality by 20 percent compared to chest X-rays
Date:11/4/2010

atomic structures overlie one another.

A secondary finding in the study showed overall deaths due to any factor, including lung cancer, were 7 percent lower in those screened with low-dose helical CT than in those screened with chest X-ray. Approximately 25 percent of deaths in the NLST were due to lung cancer, while other deaths were due to factors such as cardiovascular disease.

"The combined findings of a reduction in mortality due to lung cancer and in overall mortality are important for the overall interpretation and impact of the results from this study," Gatsonis said.

Today's announcement addresses only the primary objective of the NLST study: the lung cancer mortality comparison between helical CT and chest X-rays. Intensive analysis of the data collected in the study is now under way to address a host of questions, including the health care required to follow up screening findings, the impact of screening on quality of life, and the cost and cost-effectiveness of screening for lung cancer, Gatsonis said. The results of these analyses will provide crucial information for the eventual development of guidelines for screening for lung cancer.

Faculty and staff at the Brown Center for Statistical Sciences contributed methodologic expertise and leadership throughout the study, in collaboration with other ACRIN and LSS investigators, Gatsonis said. They collaborated on the original design and implementation of the study, worked on the collection and monitoring of the data, and prepared in-depth reports for the independent Data and Safety Monitoring Committee. Now they are doing the final analysis of the data and contributing to the interpretation of the findings.

Faculty and staff at the center also organized and carried out the data collection on the impact of screening on quality of life and smoking cessation. Ilana Gareen, research assistant professor of community health, is leading this effort.

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Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University
Source:Eurekalert

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