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. 2017 Jun 30;15:121. doi: 10.1186/s12916-017-0887-4

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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. 2 — Hotspots of symptomatic parasitaemia. a displays a scatter plot of the number of significant hotspots per study area against malaria positive fraction, b shows the log risk ratios of malaria within the primary hotspot against the malaria positive fraction and c shows the –log (p values) of the primary hotspots against malaria positive fraction. The blue lines in a, b and c show the fitted multiple fractional polynomial model predictions after adjusting for study design and the overall age of study participants. Shaded areas in a, b and c represent 95% confidence intervals (CIs)