Construction, Validation, and Visualization of Two Web-Based Nomograms for Predicting Overall Survival and Cancer-Specific Survival in Elderly Patients with Primary Osseous Spinal Neoplasms

Figure 9

The Kaplan-Meier analysis of OS for patients stratified by the risk stratification system in the training set (a) and validation set (b) and of CSS for patients stratified by the risk stratification system in the training set (c) and validation set (d).

(a)

(b)

(c)

(d)