Case fatality rate of novel coronavirus disease 2019 in China

Rui Qi; Chao Ye; Xiang-rong Qin; Xue-Jie Yu

Converging stage CFRs data when T = 4 to 7 was selected for plotting with the same y axis 168 scales ( Figure 4) . As it showed, For T= 4, CFRs had increase trends, and T = 5, the CFRs 169 slightly increased. When T was 7, CFRs decreased and reached stable at later stage. When T 170 was 6, plateau stage appeared earlier than T = 7. The slopes of linear models became flatter 171 and approached towards to 0 when T approaching to 6. Then T = 6 was selected as the true T 172 value for the true CFR calculation. The true CFR of COVID-19 in Hubei calculated by mean 173 value of the daily CFRs of plot 6 in Figure 4 was 5.4%. The estimated T value was smaller 174 than non-Hubei regions. It was not surprising as it seemed that time of case confirmation to 175 death was shorter. Previously in Wuhan City of Hubei Province, many patients had not been 176 . CC-BY-NC-ND 4.0 International license It is made available under a is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity.