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Actuarial overall survival after palliative reirradiation stratified by new score, variant 2 (Kaplan-Meier estimate): median 24.5 (4-5 points) versus 9.7 (6–8 points) versus 2.8 (9–11 points) versus 1.1 months (>11 points), P = 0.019 for comparison between group 1 and 2, P ≤ 0.002 for all other pair-wise comparisons. Number of patients in each group: 20, 26, 18, and 6. Missing information to assign score in 17 patients.
