Fig. 1
From: Subcutaneous injection of IFN alpha-2b for COVID-19: an observational study
Comparison of length of hospitalization among patients with COVID-19 by patient group. Confirmed COVID-19 patients were treated with oral LPV/r alone or combined therapy of subcutaneous IFN alpha-2b injection and oral LPV/r. For combination group, patients who received IFN alpha-2b within 72 h of admission were defined as the early intervention group, while those who received IFN alpha-2b after 72 h of admission were defined as the delayed intervention group. Data are expressed as mean ± SD