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. 2023 Oct 28;13:18538. doi: 10.1038/s41598-023-45695-y

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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 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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Forest plot for the odd ratios of calling 911 and taking aspirin among AMI patients with and without an intervention: The midpoint of each line illustrates the odds ratio; the horizontal line indicates the confidence interval, and the diamond shows the pooled odds ratio. The red and gray vertical lines indicate the overall effect-size and null-effect values, respectively.