At 6 months (%) | At 12 months (%) | p | |
---|---|---|---|
Age | |||
≤65 years (n = 85) | 95 | 95 | |
>65 years (n = 90) | 92 | 61 | 0.13 |
Gender | |||
Female (n = 53) | 96 | 96 | |
Male (n = 122) | 92 | 75 | 0.35 |
ECOG performance score | |||
2 (n = 49) | 98 | 83 | |
3-4 (n = 126) | 88 | 88 | 0.44 |
Number of involved vertebrae | |||
1-2 (n = 55) | 98 | 82 | |
≥3 (n = 120) | 90 | 82 | 0.27 |
Ambulatory status prior to RT | |||
Not Ambulatory (n = 89) | 92 | 92 | |
Ambulatory (n = 86) | 93 | 80 | 0.54 |
Other bone metastases | |||
No (n = 65) | 98 | 79 | |
Yes (n = 110) | 88 | 88 | 0.55 |
Visceral metastases | |||
No (n = 86) | 98 | 91 | |
Yes (n = 89) | 86 | 43 | 0.002 |
Time developing motor deficits | |||
1-7 days (n = 88) | 89 | 89 | |
>7 days (n = 87) | 96 | 83 | 0.22 |
Radiation schedule | |||
Short-course RT (n = 90) | 87 | 77 | |
Longer-course RT (n = 85) | 98 | 86 | 0.12 |
Entire cohort (n = 175) | 93 | 82 |