Alive and discharged without supplemental oxygen
The number of patients alive and discharged without supplemental oxygen in all groups was recorded. On day 29, 34 (82.9%) of 41 patients in the 0.12 mg/kg group, 27 (65.9%) of 41 in the 0.2 mg/kg group, 31 (70.5%) of 44 in the 0.3 mg/kg group, and 29 (70.7%) of 41 in the placebo group were discharged without supplemental oxygen. The difference between the 0.12 mg/kg group and the placebo group is statistically significant (