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. 2023 Jul 31;6:136. doi: 10.1038/s41746-023-00887-8

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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 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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Fig. 3 — If the symptoms included palpitation, chest tightness, dizziness, and headache, choose 1, otherwise choose 0; If there were caries, missing teeth, or dentures in the dentition, choose 1, otherwise choose 0;1 was selected when ECG was abnormal, and 0 was selected otherwise. a CHD risk scorecard for males. b CHD risk scorecard for females. c Threshold of risk group in the scorecard for male. d Threshold of risk group in the scorecard for females.