Urine biochemical parameters analysis of three patients’ groups 
In terms of SG (p=0.334) and pH (p=0.229), there was no statistically significant difference found between the three patients groups. Patients in the moderate group had a significantly lower average age than patients in the severe and critical groups (p<0.001). The rate of proteinuria was significantly higher in patients in the severe and critical groups compared to the moderate group (p<0.001).
Erythrocyturia ratio was significantly higher in the critical group than in the moderate group (p<0.001), but there was no significant difference found between the severe group and the other two groups (p>0.05). Proteinuria and glucosuria rates were significantly higher in severe and critical groups than in the moderate group (p<0.001). Proteinuria and glucosuria rates were significantly higher in the critical group than in the severe group (p<0.05).