Risk Stratification System Based on the Nomogram Model
Based on the cutoff value of the total points calculated by the nomogram, a risk stratification system was developed. Patients were divided into 2 groups according to the point: low-risk (point: 0-182) and high-risk (point: 183-333). The Kaplan–Meier analysis was performed to compare the CSS of different risk stratification groups.In all patients, the 6-, 12-, and 18-month CSS were 90.0%, 75.1%, and 63.4% in the low-risk subgroup and 56.9%, 33.7%, and 23.8% in the high-risk subgroup. The median CSS was 31.0 months (95% CI: 24.5-37.5) in the low-risk subgroup and 8.0 months (95% CI: 6.2-9.8) in the high-risk subgroup (