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Table 1 Different Stages of a Patient

From: Statistical design of Phase II/III clinical trials for testing therapeutic interventions in COVID-19 patients

Different Stages of a Patient
Stage Condition
8 Death
7 Ventilation with Additional Organ Support (ECMOa)
6 Intubation and Mechanical Ventilation
5 Non-invasive Ventilation or High-flow Oxygen
4 Oxygen by Mask or Nasal Prongs
3 Hospitalized; No Oxygen Therapy
2 Limitation of Activities
1 No Limitation of Activities
  1. aECMO Extracorporeal membrane oxygenation