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. 2020 Aug 24;10:14135. doi: 10.1038/s41598-020-71145-0

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Comparison of changes in clinical profile within the matched cohorts (*significant intergroup difference of p < 0.05). (a) Comparison of Oswestry Disability Index (ODI) score. (b) Comparison of Pittsburgh sleep quality index (PSQI) score. Middle line in the box: median value; x mark within the box: mean value; upper and lower edges of box: interquartile range including 50% of the observations; dots outside box: outliers. Whisker lines extend for 1.5 times the interquartile range.