Table 4.
Univariate analysis for overall survival in patients with solitary plasmacytoma of bone
| Parameter | N | Hazard ratio | Confidence interval | P |
|---|---|---|---|---|
| Age | 116 | 1.07 | 1.04-1.09 | < .001 |
| Male sex | 116 | 0.65 | 0.40-1.06 | .083 |
| Hemoglobin | 116 | 0.91 | 0.80-1.03 | .013 |
| Serum M spike | ||||
| Positive | 116 | 0.99 | 0.62-1.59 | .980 |
| Size | 116 | 0.99 | 0.77-1.27 | .927 |
| Urine M spike | ||||
| Positive | 105 | 1.58 | 0.97-2.56 | .066 |
| Size | 105 | 0.74 | 0.43-1.25 | .262 |
| Free light chain assay | ||||
| Ratio less than 0.26 or more than 1.65 | 116 | 1.51 | 0.97-2.36 | .070 |
| Ratio less than 0.25 or more than 4.0 | 116 | 1.68 | 1.04-2.69 | .033 |
| Elevated light chain | 107 | 1.28 | 0.81-2.02 | .300 |