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. 2020 Mar;8(6):361. doi: 10.21037/atm.2020.02.70

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2020 Annals of Translational Medicine. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Primary prevention of all myocardial infarctions with aspirin vs. control. (A) Forest plot: individual and pooled RRs with 95% CIs and the weight of the corresponding study in the meta-analysis. (B) SND scatter plot: SND on the vertical axis is equal to the logarithm of RR over its standard error, and the precision on the horizontal axis is the reciprocal of the standard error. The extension line of the regression line passes through the origin (P=0.881), indicating no publication bias. RR, risk ratio; CI, confidence interval; SND, standard normal deviate.