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. 2019 Mar 28;17:69. doi: 10.1186/s12916-019-1303-z

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© The Author(s). 2019

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. 5 — Similarity between community medicine distributors and their friends. Dashed lines show the mean value. All plots include all CMDs (59 obs.). Histogram bar widths = 0.25. a–k Show CMD homophily scores for all socioeconomic characteristics. Homophily is the measure of likeness for a group of individuals; homophily scores for CMDs reveal to what extent the friend group of a CMD is similar to the CMD of interest when compared by socioeconomic characteristics (Additional file 1: supplementary methods). A score of − 1 indicates perfect similarity, i.e. friends have the same characteristic/value as the CMD for the variable of interest, whilst + 1 indicates perfect dissimilarity, i.e. no friends have the same characteristic/value as the CMD for the variable of interest