Figure 5. Disease remission time in severe COVID-19 patients with and without comorbidities. The time for disease remission was evaluated by the Kaplan-Meier method. The median remission time, hazard ratio (HR) and 95% confidence interval (CI) are shown. (A) Complete remission time (time from onset treatment to negative nucleic acid detection of coronavirus combined with CT images absorption). (B) Time for negative coronavirus nucleic acid detection (time from onset treatment to negative nucleic acid detection of coronavirus). (C) Time for CT images to show disease remission.