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. 2019 Nov 20;10:856. doi: 10.3389/fpsyt.2019.00856

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Copyright © 2019 An, Park, You, Park, Park, Woo, Kim and Son

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Network structures with low vs high anxiety before and after propensity score matching. (A) Network structures before propensity score matching; (B) Network structures after propensity score matching. Overall connectivity was increased in the high anxiety group before propensity score matching. Remarkable changes in the high anxiety group are newly formed edges between lassitude [M7]— suicidal thought [M10] and apparent sadness [M1] —reduced sleep [M4]. Edges in blue color represent proportional relationships and edges in red color represent inverse relationships. The magnitude of color represents the degree of the relationship between symptoms.