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. 2022 Jan 5;6(1):e190. doi: 10.1097/EE9.0000000000000190

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Copyright © 2022 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of The Environmental Epidemiology. All rights reserved.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 2. — The temporal distribution of the 2-year average of PM_2.5 concentration by year in Taiwan. (A, B) represent the temporal distributions of the 2-year average PM_2.5 concentrations by year. Boxes cover the 25th–75th percentiles (IQR) with center lines indicating the median concentration. Whiskers extend to the highest observed concentrations within the three IQRs of the box, with more extreme observations shown as circles. Panel A illustrates the distribution of baseline PM_2.5 concentrations from 121,948 participants. (B) shows the distribution of PM_2.5 exposure of 407,821 medical visits from the 121,948 participants. IQR, interquartile range.