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. 2023 Dec 8;13:21545. doi: 10.1038/s41598-023-47979-9

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© The Author(s) 2023

Open Access This 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Dot and box plots for systolic blood pressure by electroencephalogram-based sleep cluster and results of univariable and multivariable linear regression analyses. EEG electroencephalogram, CI confidence interval, SD standard deviation. Model 1 is adjusted for age and sex; Model 2 is further adjusted for body mass index, smoking history, and drinking habits; and Model 3 is further adjusted for the 3% oxygen desaturation index. In Model 3, two participants with missing values of 3% oxygen desaturation index are excluded. Each box plot shows the median, interquartile range, and minimum and maximum scores. Two patients receiving treatment for hypertension are excluded.