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. 2018 Nov 12;58(8):3047–3058. doi: 10.1007/s00394-018-1850-7

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© The Author(s) 2018

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.

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Fig. 3 — Maternal iodine intake from food (in non-supplement users) and child school outcomes at age 8 years, adjusted models. Higher odds ratio indicate poorer test results (a, b) and increased likelihood of receiving special educational services (c). The reference level (OR = 1) was set to 160 µg/day. Sample size was n = 24,309 for mapping tests in reading (a), n = 23,527 for mathematics (b), n = 24,806 for special education (c). The histogram in c represents the distribution of iodine intake. For crude models, see Supplementary Figure S8 (Online Resource 1)