COVID-19 Research Paper Volume 13, Issue 20 pp 23459—23470

COVID-19: risk factors for severe cases of the Delta variant

class="figure-viewer-img"

Figure 1.

ROC curve and Kaplan Meier. (A) ROC curve suggested that age was valuable in predicting severe disease, and the cut-off point was 58.5 years. (B) ROC curve suggested that total bilirubin level was valuable in predicting severe disease, and the cut-off point was 7.23 μmol/L. (C) Kaplan Meier analysis suggested that patients with total bilirubin levels greater than 7.23 μmol/L were more likely to develop into severe cases. (D) Kaplan Meier analysis suggested that patients with age greater than 58.5 years were more likely to develop into severe cases. (E) Kaplan Meier analysis suggested that patients with Temperature ≥39°C were more likely to develop into severe cases. Abbreviation: AUC: area under the curve.