Background
Melanoma is the fifth leading cause of cancer in the United States. This study’s objective is to analyze geographical trends in melanoma-related mortality in the US before and during COVID-19. To date, no previous studies have analyzed geographical trends in melanoma mortality using the CDC Wonder data base. Previous literature reports Utah, Vermont, Delaware, Minnesota and New Hampshire as having the highest UV-attributable incidence rates of melanoma.
Methods
The CDC Wonder database was used to collect data on melanoma-related mortality rates in the US from 1999-2022. Age-adjusted mortality rates (AAMR) per 100,000 and annual percentage change (APC) using Joinpoint regression were used to analyze state and regional trends.
Results
From 1999 to 2019, the states with the largest increase in AAMR were Idaho (0.91) and Colorado (0.63) while Oklahoma (-1.07), Nevada (-0.94), and Texas (-0.92) saw the largest decreases. During COVID-19 (2019 to 2021), the states with the largest increase in AAMR were South Dakota (1.42), Oregon (1.09), and Montana (1.08) while Vermont (-1.02), Minnesota (-0.45), and Connecticut (-0.38) had the largest declines. From 2006-2022, except 2020, the Northeast consistently had the lowest AAMR. From 2008-2012 the West consistently had the highest AAMR. From 2013-2022, except 2015, the Midwest had the highest AAMR. From 2009 onwards, all 4 regions have seen an overall decline in AAMR with their lowest values being in 2022.
Conclusions
Idaho had the highest AAMR before COVID-19 while Oklahoma had the lowest. During COVID-19, South Dakota saw the highest AAMR while Vermont had the lowest. AAMRs have been trending downwards across all 4 regions since 2009 and the Northeast has fared the best over that period. These results should be used to increase implementation and enforcement of preventative measures to reduce UV exposure, especially in states with higher AAMRs. Further research should examine statewide sun protection programs to search for any relationship with their AAMRs.