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. 2020 Feb 6;20:196. doi: 10.1186/s12889-020-8282-z

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© The Author(s). 2020

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 — Estimated marginal contribution of individual (panel a), provider (panel b), and clinical factors (panel c) to roundtrip travel time fully stratified by rural-urban category. Note: The estimated value presented in the figure is the additional, marginal contribution of each factor to round trip travel time after controlling for all other listed factors based on a separate regression for each category of rurality. Standard errors are clustered at the individual level. * Represents association is statistically significantly (p < 0.05) for rural RUCC 4–6 patient compared to metro patient. † Represents association is statistically significantly (p < 0.05) for rural RUCC 7–9 patient compared to metro patient