Table 8: Features of the brain metastasis affecting local recurrence in univariate and multivariate analysis (Cox regression model).
CI*; confidence interval, NR†; not reached at median value, NA‡; not assessed, MCR§; microscopic complete resection, GTR☐; gross total resection.
| Factor | median survival (month) | univariate analysis (month) | Hazard ratio (95% CI*) | multivariate analysis (month) | Hazard ratio (95% CI) |
| Timing of metastasis | synchronous | NR† | 0.134 | 1.79 (0.83, 3.87) | NA‡ | |
| metachronous | NR |
| Tumor size | < 3cm | NR | 0.058 | 1.94 (0.97, 3.88) | NA | |
| ≥ 3cm | NR |
| Tumor locations | supratentorial | NR | 0.055 | 3.70 (0.88, 15.49) | NA | |
| infratentorial | NR |
| Method of surgery | Group A (MCR§) | NR | 0.000 | 3.84 (1.77, 8.32) | 0.007 | 3.09 (1.37, 6.96) |
| Group B (GTR☐) | 11.6 |