Patient and structural factors contribute to significant geographic differences in mortality from gastrointestinal (GI) cancers, according to a study published in the August issue of Gastroenterology.
Christopher Ma, M.D., M.P.H., from the University of Calgary in Alberta, Canada, and colleagues used data from the U.S. Centers for Disease Control and Prevention Wide-ranging Online Data for Epidemiologic Research platform (2010 to 2019) to calculate county-level mortality from esophageal, gastric, pancreatic, and colorectal cancers.
The researchers observed significant geographic disparities in GI cancer-related county-level mortality across the United States. The ratio of mortality between the 90th and 10th percentile counties ranged from 1.5 for pancreatic to 2.1 for gastric cancer. Counties in the Southeastern United States primarily accounted for the highest 5 percent of mortality rates for gastric, pancreatic, and colorectal cancer. Intercounty variability in mortality rates for esophageal, gastric, pancreatic, and colorectal cancer was partially explained by multivariable models (43, 61, 14, and 39 percent, respectively). GI cancer-related mortality was most strongly associated with cigarette smoking and rural residence (independent of specialist density).
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