Predicting Progression of COVID-19 Infection to Prioritize Medical Resource Allocation: A Novel Triage Model Based on Patient Characteristics and Symptoms at Presentation

3,177/ China (current smoking age 15+ was 26.6% in 2018) smoker: C=current, F=former Of 913 hospitalized with C-19, C=7.7% 664 mild: C=5.6% 249 severe/critical: C=13.3% Of 712 hosp'd with Covid-19, F=3.9% 553 mild: F=2.7% 159 severe/critical F=8.2%