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. 2023 Aug 2;56(4):626–634. doi: 10.1007/s11239-023-02855-1

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Geographic Variation of Baseline CHA₂DS₂-VASc Score (A) and Follow-up Stroke/SE Incidence Rate (B) Among Medicare Patients with NVAF from 2013–2016. Baseline CHA₂DS₂-VASc score and follow-up stroke/SE incidence rates were measured among all patients with NVAF by 3-digit zip code (N = 2,828,416). Incidence rates were measured per 100 person-years. Regions with higher risk scores were also the areas of higher stroke/SE incidence