Table 1.
Demographics and lesion characteristics.
| Variable | No RN (n=18) | RN (n=28) | Total (n=46) | p-value |
|---|---|---|---|---|
| Age at time of SRS, years | 0.54 | |||
| Mean (SD) | 50.4 (13.0) | 53.3 (11.7) | 52.1 (12.1) | |
| Median [Min, Max] | 51.5 [28.0, 74.0] | 55.0 [33.0, 78.0] | 53.0 [28.0, 78.0] | |
| Race, n (%) | 0.24 | |||
| White | 16 (88.9) | 19 (67.9) | 35 (76.1) | |
| Black | 2 (11.1) | 8 (28.6) | 10 (21.7) | |
| Other | 0 (0) | 1 (3.6) | 1 (2.2) | |
| Location of irradiated brain metastasis, n (%) | 0.14 | |||
| Frontal | 3 (16.7) | 4 (14.3) | 12 (26.1) | |
| Parietal | 1 (5.6) | 4 (14.3) | 5 (10.9) | |
| Temporal | 0 (0) | 2 (7.1) | 2 (4.3) | |
| Occipital | 0 (0) | 2 (7.1) | 2 (4.3) | |
| Cerebellar | 3 (16.7) | 9 (32.1) | 12 (26.1) | |
| Midbrain/Brainstem | 0 (0) | 1 (3.6) | 1 (2.2) | |
| Multiple | 11 (61.1) | 6 (21.4) | 17 (37.0) | |
| Number of brain metastasis (binary), n (%) | 0.016 | |||
| Single | 7 (38.9) | 22 (78.6) | 29 (63.0) | |
| Multiple | 11 (61.1) | 6 (21.4) | 17 (37.0) |
RN, radiation necrosis; SD, standard deviation; SRS, stereotactic radiosurgery. Significant p values (p<0.05) in bold.