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. 2017 Feb 24;16:15. doi: 10.1186/s12940-017-0217-5

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Illustration of address locations in urban and rural areas with the three distinct methods. a example of residence located in urban area; b example of residence located in rural area (circle: ArcGIS online location for method R (a); triangle: manually improved location with method R used as reference; cross: location with method A; square: location with method B; dashed lines representing the distances between addresses located with ArcGIS online for method R and method R (a); methods A and R (a, b) and methods B and R (a, b))