GOT1 and COVID-19: From the 35 nodes of the tree, which consists of 18 branches from the root node to the leaves, the branch of nodes zero, 1, 5, 14, 17, and 25 indicates the lowest risk of death, namely, if a person is less than 60 years old and BUN ≤ 20 and SGOT ≤ 45 and ESR ≤ 30 and PTT have a range between 30 and 40, then the risk of COVID-19 death is 3.6%.