Sepsis & infection

Bayesian methods: a potential path forward for sepsis trials

Crit CarePublished Simulation study

An erratum to this article was published (Crit Care, 3 Jan 2024 ↗)

Authors' conclusion

Using Bayesian methods and a biologically justifiable use of historical data in a prior distribution yields a study design with higher power than a conventional design that ignores relevant historical data.

Study context

Population
Simulated new trial of polymyxin B hemoadsorption in adult critically ill patients with endotoxemic septic shock, using historical data from a 179-patient subgroup (multiple organ failure, endotoxin activity 0.60–0.89) of a US and Canada multicentre RCTsimulated new trial
Participants
150 participants
Comparison
Four ways of including historical data in the prior vs ignoring historical data
Outcome
Statistical power / probability of benefit (mortality) by use of historical data
Methodological detailsBayesian, historical data incorporated through a prior distribution
  • Bayesian
  • Historical data incorporated through a prior distribution

Main finding

As reported in the abstract

Probability of benefit, example result with mortality reduced from 44 to 37%

Original publication

Bayesian methods: a potential path forward for sepsis trials. Crit Care. Published 8 November 2023. doi:10.1186/s13054-023-04717-x

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