Table 1.
Patient demographic and clinical characteristics
| Number of patients | 149 | ||
| Number of lesions | 166 | ||
| Age | Mean (SD) | 56·4 (12·5) | |
| Median (range) | 58·0 (20·0–88·0) | ||
| Characteristic | Value | n | % |
| Sex | Men | 77 | 51·7 |
| Women | 72 | 48·3 | |
| Karnofsky performance status | 100 | 8 | 5·4 |
| 80–90 | 108 | 72·3 | |
| 70 | 30 | 20·3 | |
| <70 | 3 | 2·1 | |
| Previous therapy to spinal site | Radiotherapy alone | 40 | 26·8 |
| Surgery alone | 22 | 14·8 | |
| Radiotherapy and surgery | 39 | 26·2 | |
| None | 48 | 32·2 | |
| Primary histology | Breast | 15 | 10·1 |
| Colon | 6 | 4·0 | |
| Non-small cell lung | 15 | 10·1 | |
| Melanoma | 4 | 2·7 | |
| Thyroid | 14 | 9·4 | |
| Renal | 47 | 31·5 | |
| Sarcoma | 17 | 11·4 | |
| Other | 28 | 18·8 | |
| Unknown | 3 | 2·0 | |
| SBRT site | Cervical | 28 | 18·8 |
| Thoracic | 66 | 44·3 | |
| Lumbar | 51 | 34·2 | |
| Sacral | 4 | 2·7 | |
| Metastatic tumor volume (cc) | Median (range) | 38·2 (1·6–357·9) | |
SD=standard deviation. SBRT=stereotactic body radiotherapy.