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. 2022 Nov 28;12:20478. doi: 10.1038/s41598-022-24408-x

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© The Author(s) 2022

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 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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The variables information under state 0 and 1. The state 0 means the individual is not in circulatory failure and 1 means circulatory failure which should be alerted. The t value is based on the student t-test, and chi-squared test is conducted for the categorical variable Non-opioid analgesics, with all the p-value significant under level 0.01(***).