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. Author manuscript; available in PMC: 2022 Jul 1.
Published in final edited form as: Diabetes Metab Res Rev. 2020 Oct 5;37(5):e3410. doi: 10.1002/dmrr.3410

Figure 1.

Figure 1.

Distribution of counties using the 2013 National Center for Health Statistics (NCHS) system for urban-rural classification at the county level. The six-level system comprises metropolitan counties (large central metro, large fringe metro, medium metro, and small metro) and nonmetropolitan counties (micropolitan and noncore). Reproduced from publicly available report.17