Table 2: Univariate and multivariate analyses of characteristics affecting survival of adults with non-Hodgkin primary bone lymphoma.

CharacteristicsUnivariate analysis Multivariate analysis
mean ± SD

10-year OS, %
Trial
 02 nsns
 03
Epidural extension
 No nsns
 Yes
PS ≥2
 No 0.046ns
 Yes
10-year EFS, %
Trial
 02 nsns
 03
Epidural extension
 No nsns
 Yes
PS ≥2
 No 0.0380.018
 Yes

OS: overall survival; PS: performance status; EFS: event-free survival; ns: not significant.
Other studied factors (gender, stage, B symptoms, site, lactatedehydrogenase level, and bulky disease) do not have significantly statistical prognosis.