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Correspondence on “Electrocardiographic findings and prognostic values in patients hospitalised with COVID-19 in the World Heart Federation Global Study” by Pinto-Filho et al
  1. Hamid Reza Marateb1,
  2. Marjan Mansourian1,
  3. Miguel Angel Mañanas1,2
  1. 1Biomedical Engineering Research Centre (CREB), Automatic Control Department (ESAII), Universitat Politècnica de Catalunya · Barcelona Tech - UPC, Barcelona, Catalunya, Spain
  2. 2Biomedical Research Network Centre of Bioengineering Biomaterials and Nanomedicine, Madrid, Spain
  1. Correspondence to Professor Hamid Reza Marateb, Department of Automatic Control, Biomedical Engineering Research Center, Universitat Politecnica de Catalunya, Barcelona 08028, Catalunya, Spain; hamid.reza.marateb{at}

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To the Editor We read with great interest the manuscript of Pinto-Filho et al.1 It is a multicentre study about the prognostic values of electrocardiographic findings, where such a gap was provided by the US Preventive Services Task Force that the current evidence was insufficient to relate such findings to predict and thus prevent cardiovascular disease (CVD) events.2

Clinical findings must have proper statistical analysis to ensure reliability.3 It is especially important for clinical prediction, where the experimental design, validation framework and source of biases must be precisely taken into account.4–6 Various standards, including TRIPOD,7 have been proposed in the literature and have become part of the author guidelines of journals such as Heart. The multiple logistic regression model (MLR) was used by Pinto-Filho et al1 as …

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  • Contributors All the authors have significantly contributed to the manuscript.

  • Funding This work was supported by the Beatriu de Pinós post-doctoral programme from the Office of the Secretary of Universities and Research from the Ministry of Business and Knowledge of the Government of Catalonia (Grant number: #2020 BP 00261).

  • Competing interests None declared.

  • Provenance and peer review Commissioned; internally peer reviewed.

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