Prediction of Solitary Plasmacytoma of Bone in Elderly Patients: A Nomogram and a Risk Classification System for Overall Survival

Figure 3

Kaplan–Meier curves of variables were performed for OS in elderly patients with SPB. (a) Age, (b) sex, (c) race, (d) marital status, (e) primary site, and (f) grade.

(a)

(b)

(c)

(d)

(e)

(f)