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The Spatial and Temporal Association between Breast and Colorectal Cancer Incidence and Poverty among California Teachers

Authors: Rachelle De Ocampo*, San Diego State University, Wayne Kepner*, SDSU
Topics: Medical and Health Geography, Women
Keywords: breast cancer, colorectal cancer, poverty, spatial analysis, temporal analysis, California teachers
Session Type: Poster
Presentation File: No File Uploaded


In the United States, cancer is the second leading cause of death, causing one in every four deaths. Among those living in California, female breast cancer has the highest incidence rates and colorectal the fourth highest incidence rates. In addition, certain occupations, such as teaching may have a higher risk of breast cancer. We aim to assess the spatial and temporal association between poverty rates and 1) breast cancer and 2) colorectal cancer among California teachers. Using data from the California Teacher Study (CTS) we identified women diagnosed with breast or colorectal cancer from the years 2005-2015. We will be using CTS participant geographic location data aggregated at the census tract level combined with US Census Bureau poverty rate data at the census tract level. Census tracts with <6 participants will be suppressed. SatScan will be utilized for spatial and temporal analysis to determine if there are any significant geographic clusters over space and time using spatial and temporal scan statistics. QGIS is the geographic information system utilized to map the geographic clusters. The results of this analysis will reveal areas of high or low rates of breast or colorectal cancer and any associations between these cancer incidences and poverty rates by census tract. By utilizing large-scale public data on census tract poverty rates in conjunction with CTS data, we hope to identify high-risk geographical areas and populations which might benefit from more targeted health interventions.

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