Fig. 3.

COVID-19 clinical trajectory demonstrating change in supplemental oxygen required from first onset of symptoms to follow-up in the intensive care unit recovery clinic with significant markers of patient case located on the horizontal axis. Adm Admission, appt Appointment, Dc Discharge, FiO₂ Fraction of inspired oxygen, ICU RC Intensive care unit recovery clinic, MIC Medical intensive care unit, NT Not tested, OSH Outside hospital, Tx Transfer, UTC Urgent treatment center, VAS Visual analog scale