Retrospective observational study
564
The Use of Adjuvant Therapy in Preventing Progression to Severe Pneumonia in Patients with Coronavirus Disease 2019: A Multicenter Data Analysis
0
COVID-19 (severe/critical)
Comorbidities
COPD
Chronic obstructive pulmonary disease
Not present
Present
Odds ratio
10.460 (3.760-29.100)
No
Yes