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Table 5 Analysis of factors predicting local tumor control failure (Cox proportional hazards model)
| Covariate | P value | Hazard ratio (95% CI) |
|---|---|---|
| Large TV (>2 mL) | 0.003 | 12.8 (2.36–69.3) |
| Tumor causing focal deficit | 0.379 | 1.69 (0.526–5.41) |
| High marginal dose (≥20Gy) | 0.949 | 1.04 (0.317–3.41) |
| Two-session SRS | 0.946 | 1.05 (0.284–3.86) |
