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. 2018 Apr 16;17:39. doi: 10.1186/s12940-018-0381-2

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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. 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 — Mean difference (95% CI) for increment in contemporaneous greenness (at 250-m buffer) and a) perceived stress, b) anxiety symptoms, and c) depressive symptoms among NSHAP participants, stratified by effect modifiers in multivariable models^1,2. ¹ Multivariable models adjusted for age, gender, questionnaire year and season, region, education attainment, 3-day moving average of temperature and 60-months moving average of PM_2.5. ² First category of each modifier as reference group; daggers represent statistically significant effect modification (p-interact < 0.05)