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. 2015 Nov 28;15:1190. doi: 10.1186/s12889-015-2520-9

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© Lemke et al. 2015

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 — Participation rates and random effects in the final spatio-temporal regression model. Spatial pattern of the biennial participation rates, for the periods: 2007–08 (a), 2009–10 (b), and 2011–12 (c). Black dots mark the location of the screening units in the study region. Odds ratios compared to the intercept (α) of the unstructured (Φ_t) and structured (γ_t) temporal effect (d), combined unstructured and structured spatial heterogeneity (u_i + v_i) (e), and spatio-temporal interaction effect (ψ_it) for 2007–08 (f), 2009–10 (g), and 2011–12 (h). All random effects were classified according to their quantiles