First, in the cluster analysis, we screened out six characteristics that affected the differences between groups, age, hypertension grade, MuLBSTA (Iijima et al., 2021a), use of ACEI/ARB, NT-proBNP, and high-sensitivity troponin I. The MuLBSTA score (Iijima et al., 2021b) is a valuable and effective early warning model that has been developed to predict the mortality rate of patients with viral pneumonia. Here, NPPB is linked to hypertensive disorder.