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Table 4 Multivariate analysis* (Cox model) in 201 irradiated patients

From: Prognostic factors in solitary plasmacytoma of the bone: a multicenter Rare Cancer Network study

Covariable

OS

 

DFS

 

LC

 

MM

  
 

RR

p-value

RR

p-value

RR

p-value

RR

p-value

comment

Age (years)

0.59

<0.00001

0.79

0.02

-

-

0.78

0.01

≤ 60 years better

Localization (vertebra vs.other)

-

-

-

-

0.63

0.04

-

-

vertebra better

Tumor size (cm) (<5 vs. ≥5)

0.56

0.0007

-

-

-

-

-

-

<5 cm better

  1. *including age, gender, localization, tumor size, IgM subtype, type of treatment, and biologically equivalent radiation dose.
  2. OS: overall survival; DFS: disease-free survival; LC: local control; MM: progression to multiple myeloma