Risk stratification system
The total predicted score calculated from the nomogram was used in a
risk stratification system for predicting patient survival. Patients
were grouped into those with low (total score, < 130.78) and
high (total score, ≥130.78) risk. The median survival of the entire
cohort of patients with low risk, and high risk were 24 and 7 months,
respectively. It showed that Kaplan-Meier survival curves predicted by
the nomogram were significantly different (Figure 5F).