Table 2.
Survival and comparison between groups based on each prognostic index.
| Index | Median survival in months (95% CI) |
p-Values of comparative survival |
||||
|---|---|---|---|---|---|---|
| Group 1 | Group 2 | Group 3 | Group 1 vs. 2 | Group 1 vs. 3 | Group 2 vs. 3 | |
| RPA | 4.7 (1.6 to 6.2) | 9.4 (6.8 to 12.4) | 10.5 (9.2 to –) | 0.13 | <0.01 | 0.88 |
| SIR | 4.7 (0.7 to 8.5) | 9.3 (6.8 to 10.5) | 12.3 (4.8 to –) | 0.38 | 0.09 | 0.99 |
| BSBM | 3.0 (0.7 to 7.6) | 5.8 (3.4 to 8.7) | 12.4 (9.3 to 20.6) | 0.88 | <0.01 | <0.01 |
| GPA | 3.0 (0.7 to 6.2) | 9.2 (5.9 to 12.4) | 10.5 (9.3 to 20.6) | 0.02 | <0.01 | 1.00 |
RPA, recursive partitioning analysis; SIR, Score Index for Radiosurgery; BSBM, Basic Score for Brain Metastases, GPA, graded prognostic assessment.