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. 2022 Sep 16;2:117. doi: 10.1038/s43856-022-00179-4

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© The Author(s) 2022

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Absolute (a) and relative (b) accessibility coverage for the six different gridded population data sets: HRSL, GHS-POP, GPWv4, LandScan, WorldPop top–down constrained, WorldPop top–down unconstrained. Total population is lower for HRSL because Ethiopia, Somalia, Sudan, and South Sudan are not included in the data set released in 2018. Legend indicates the total population falling on barriers (i.e., permanent waterbodies) and thus not included in the analysis.