Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Matters Arising
  • Published:

Reply to: Concerns about estimating relative risk of death associated with convalescent plasma for COVID-19

The Original Article was published on 10 January 2022

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

References

  1. Begin, P. et al. Convalescent plasma for hospitalized patients with COVID-19: an open-label, randomized controlled trial. Nat. Med. 27, 2012–2024 (2021).

  2. Yusuf, S., Wittes, J., Probstfield, J. & Tyroler, H. A. Analysis and interpretation of treatment effects in subgroups of patients in randomized clinical trials. J. Am. Med. Assoc. 266, 93–98 (1991).

    Article  CAS  Google Scholar 

  3. Korley, F.K. et al. Early convalescent plasma for high-risk outpatients with Covid-19. N. Engl. J. Med. https://doi.org/10.1056/NEJMoa2103784 (2021).

  4. The RECOVERY Collaborative Group, et al. Convalescent plasma in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial. Lancet 397, 2049–2059 https://doi.org/10.1016/S0140-6736(21)00897-7 (2021).

  5. Writing Committee for the REMAP-CAP Investigators, et al. Effect of convalescent plasma on organ support-free days in critically ill patients with COVID-19: a randomized clinical trial. J. Am. Med. Assoc. https://doi.org/10.1001/jama.2021.18178 (2021).

  6. Joyner, M.J. et al. Convalescent plasma antibody levels and the risk of death from Covid-19. N. Engl. J. Med. 384, 1015–1027 (2021).

Download references

Author information

Authors and Affiliations

Authors

Consortia

Contributions

P.B., J.C. and D.M.A. drafted the response, which was further edited by R.C., E.J., Y.L. and A.F. All authors approved the final manuscript.

Corresponding authors

Correspondence to Philippe Bégin, Jeannie Callum or Donald M. Arnold.

Ethics declarations

Competing interests

The authors declare no competing interests.

Additional information

Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Bégin, P., Callum, J., Cook, R. et al. Reply to: Concerns about estimating relative risk of death associated with convalescent plasma for COVID-19. Nat Med 28, 53–58 (2022). https://doi.org/10.1038/s41591-021-01639-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue date:

  • DOI: https://doi.org/10.1038/s41591-021-01639-5

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing