Table 2.
Univariate analysis for overall survival according to each risk factor of Armstrong risk classification [10]
| Risk factor | Category | n | Median (months) | Hazard ratio | 95% CI | p value* |
|---|---|---|---|---|---|---|
| Visceral metastases |
no |
74 |
20.3 |
1.00 |
5.51 - 68.83 |
<0.001 |
| yes |
4 |
3.9 |
19.47 |
|||
| Bone scan progression |
no |
63 |
25.8 |
1.00 |
2.00 - 7.14 |
<0.001 |
| yes |
15 |
9.1 |
3.78 |
|||
| Significant pain |
no |
54 |
25.8 |
1.00 |
1.72 - 5.17 |
<0.001 |
| yes |
24 |
8.7 |
2.98 |
|||
| Hemoglobin (g/dL) |
>13.0 |
14 |
22.9 |
1.00 |
0.66 - 2.60 |
0.442 |
| ≦ 13.0 | 64 | 19.5 | 1.31 |
Abbreviations: CI, confidence interval. *log rank test.