Radon exposure is the second leading risk factor for lung cancer among smokers and the leading risk factor among non-smokers. Radon concentrated in lower levels of homes/buildings can be reduced if found, thus lowering lung cancer risk. The objective of this study was to measure radon knowledge in diverse populations, with varying radon-related laws, to inform radon-related cancer control practices and activities. A survey was mailed to 3000 homebuyers who purchased single-family homes; 995 responses (33%) were received. Overall, 86% of respondents heard of radon-related health issues. Real estate agents (69%) or home inspectors (65%) were the most common sources of information. Respondents were more likely to test their home for radon if they reported previously hearing of radon-related health issues or understanding of how radon-related health issues affect the home-buying process. Respondents in states with notification policies were twice as likely as those without policies to have heard about radon-related health issues (OR 2.01, 95% CI: 1.27-3.17). This study provides useful information for cancer control activities including that education is positively associated with home testing for radon. It also suggests partnering with real estate agents to further radon education and testing efforts to reduce radon exposure and lung cancer risk.

BACKGROUND: Lung cancer is the leading cause of cancer-related deaths in the United States, and radon exposure is the second leading risk factor. Fewer than 25% of existing U.S. homes have been tested for radon, and only 5%–10% of new homes use some form of radon prevention. OBJECTIVE: This qualitative study sought to determine radon-related knowledge, attitudes, and practices among Realtors to inform cancer control activities at local and state levels. METHODS: We conducted focus groups with Realtors in four states to collect information about knowledge, attitudes, and practices regarding radon. RESULTS: Realtors reported obtaining information on radon in similar ways, being aware of radon and its characteristics, and dealing with radon issues as a normal part of home sales. Differences in attitudes toward testing varied across states. Realtors in states with radon policies generally expressed more positive attitudes toward testing than those in states without policies. Radon mitigation was identified as an added expense to buyers and sellers. Realtors cited concerns about the reliability and credibility of mitigation systems and installers. CONCLUSIONS: These findings suggest that attitudes and practices vary among Realtors and that additional educational resources about radon as a cancer risk factor may be beneficial. When comprehensive cancer control programs update their plans, they may want to add objectives, strategies, or activities to reduce radon exposure and prevent lung cancer. These activities could include partnering with Realtors to improve their knowledge, attitudes, and practices about radon, as well as developing and distributing radon educational resources.