Performance of the nomogram in patient of low risk group and high risk group
The development cohort was stratified in two subgroups, according to the obtained score: low risk group: score < 94 points; high risk group: score ≥ 94 points. Kaplan–Meier survival curves showed a significant difference in OS between the two groups (Kaplan–Meier overall survival curves of PLN-RSJCs with different risks stratified by the nomogram