Letters Sepsis and risk of postoperative thromboses

Conflating odds ratio with “risk”

BMJ 2014; 349 doi: https://doi.org/10.1136/bmj.g6291 (Published 21 October 2014) Cite this as: BMJ 2014;349:g6291
  1. Danny J N Wong, specialist registrar in anaesthetics and intensive care medicine1
  1. 1University Hospital Lewisham, London SE13 6LH, UK
  1. dannywong{at}doctors.net.uk

Donzé and colleagues found a clinically relevant increased thrombosis complication rate in patients with preoperative systemic inflammation or sepsis.1 However, they used the “risk” of postoperative arterial and venous thromboses interchangeably with the odds ratio, which may …

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