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. 2021 May 22;25:174. doi: 10.1186/s13054-021-03606-5

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© The Author(s) 2021

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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 4 — Kaplan–Meier survival curve for patients meeting the selection criteria and patients failing to meet the criteria. a Consensus A (National consensus): Survival analysis between patients meeting the Danish national consensus selection criteria in regards to younger age < 65 years, witnessed arrest, bystander CPR, initial shockable rhythm, no-flow < 10 min and end-tidal CO₂ < 1.3 kPa, and patients failing to meet one or more criteria. b Consensus B (Extended version): Survival analysis based on a more refined assessment of selection criteria. Patients meeting all the selection criteria in the Danish national consensus and additionally one or more of following parameters: signs of life during CPR, pH > 6.8, lactate < 15 mmol/L and a pre-hospital low-flow < 100 min