Erratum to: Solitary plasmacytoma: population-based analysis of survival trends and effect of various treatment modalities in the USA

Table 6 Cox proportional hazards model for prognostic factors

Variables	Hazard ratio	95% CI		P value
Variables	Hazard ratio	Lower	Upper	P value
Age < 60 years	0.380	0.330	0.440	< 0.001
Radiation sequence with surgery	1.226	.966	1.557	.094
Radiation	0.597	0.522	0.684	< 0.001
Surgery	0.746	0.693	0.802	< 0.001

ISSN: 1471-2407