Neighborhood characteristics of low radon testing activities: A longitudinal study in Atlanta, Georgia, United States

Radon testing remains low even nationwide although its exposure is the leading cause of lung cancer among non-smokers. Little has been done to examine the neighborhood characteristics with low testing prevalence. This study investigated the associations between indoor radon testing and neighborhood characteristics in an urban environment with the highest Radon potential. A total of 25 years (1990–2015) of radon tests (n = 6355) were pooled from public and private sources in DeKalb County, Georgia, United States. Neighborhoods were characterized using racial residential segregation for African Amercians in addition to other social indicators. The associations between neighborhood characteristics and radon testing rates were evaluated using Ordinary Least Squares and Spatial Regression Models, respectively. Results show that the testing rates were lower than 6.5% over the 25 years. Summers followed by early springs experienced more tests than the other seasons. Areas of low testing rates (≤1.55%) spatially matches the mostly segregated neighborhoods. Residential segregation expanded in the 25 years and was significantly correlated (P value < 0.05) with low testing rates, even after other social indicators were controlled. Associations with the other social indicators, such as income or education, were weaker. Concertedly identifying the culturally relevant interventions in segregated communities is necessary to reduce and eliminate threats from environmental radon.