Fig. 1: Patient pathway diagram for the calculation of COVID-19 mortality for a given exposure level.
From: Potential health and economic impacts of dexamethasone treatment for patients with COVID-19
We assign two categories of patients who are eligible for dexamethasone treatment. Those who require non-invasive oxygen (but never require ventilation) and those who ultimately require mechanical ventilation (where we assume their use of non-invasive oxygen during this pathway is negligible in terms of time and cost). Each group has two survival rates associated with them, depending on whether they receive dexamethasone treatment or not. A percentage of patients will not progress to requiring ventilation if they receive dexamethasone treatment early, and this is reflected in the “Oxygen”:“Ventilator” ratio of the “Dexamethasone” branch of the pathway.
