Univariate analysis of prognostic variables for progression-free survival (time to first treatment)
| Variable . | N . | P . | Relative risk . |
|---|---|---|---|
| Sex | 76 | .9124 | 0.958 |
| Age | 76 | .7809 | 0.995 |
| White blood cell count | 75 | .3165 | 1.002 |
| Hemoglobin concentration | 69 | .0001 | 0.719 |
| Platelet count | 68 | .0202 | 0.992 |
| Bone marrow infiltration | 44 | .92 | 1.014 |
| CD38 expression | 70 | .0295 | 2.298 |
| Thymidine kinase level | 47 | .0917 | 1.012 |
| β2-microglobulin concentration | 64 | .0009 | 1.278 |
| Lactate dehydrogenase activity | 63 | .013 | 1.006 |
| Ribosomal cluster | 76 | .0207 | 3.069 |
| Variable . | N . | P . | Relative risk . |
|---|---|---|---|
| Sex | 76 | .9124 | 0.958 |
| Age | 76 | .7809 | 0.995 |
| White blood cell count | 75 | .3165 | 1.002 |
| Hemoglobin concentration | 69 | .0001 | 0.719 |
| Platelet count | 68 | .0202 | 0.992 |
| Bone marrow infiltration | 44 | .92 | 1.014 |
| CD38 expression | 70 | .0295 | 2.298 |
| Thymidine kinase level | 47 | .0917 | 1.012 |
| β2-microglobulin concentration | 64 | .0009 | 1.278 |
| Lactate dehydrogenase activity | 63 | .013 | 1.006 |
| Ribosomal cluster | 76 | .0207 | 3.069 |
P was calculated using Cox regression analysis.