Supplementary material for "Environmental, Sociodemographic, and Healthcare Determinants of County-Level Melanoma Incidence in the United States: A Cross-Sectional Ecological Study"

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Supplementary methods, tables and figures for a cross-sectional ecological analysis of age-adjusted melanoma incidence across 1,691 counties of the contiguous United States (2017–2021). County incidence from the National Cancer Institute State Cancer Profiles was linked to satellite-derived environmental exposures, county-level search-volume indices, and sociodemographic and healthcare access measures. All source data are publicly available from the repositories cited in the article, and the Supplementary Methods specify variable construction in enough detail to reconstruct the analytic dataset. The extraction and processing pipeline is not included.

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