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Table 2 Patient characteristics and survival analysis for the five prognostic indices

From: Retrospective study of hypofractionated stereotactic radiotherapy combined with whole brain radiotherapy for patients with brain metastases

PI Grade No. of patients (%) MST (months) p
RPA      < 0.001
  Class I 7 (14.0) 23.8  
  Class II 34 (68.0) 16.5  
  Class III 9 (18.0) 2.8  
GPA     0.177
  0–1.0 13 (26.0) 16.7  
  1.5–2.5 30 (60.0) 12.4  
  3.0–4.0 7 (14.0) 24.3  
SIR      < 0.001
  1–3 11 (22.0) 3.0  
  4–7 36 (72.0) 16.5  
  8–10 3 (6.0) 27.8  
BS-BM     0.010
  0 9 (18.0) 3.5  
  1 20 (40.0) 12.4  
  2 10 (20.0) 15.4  
  3 11 (22.0) 24.3  
GGS      < 0.001
  0 12 (24.0) 23.2  
  1 25 (50.0) 16.5  
  2 10 (20.0) 12.4  
  3 3 (6.0) 2.8  
  1. MST, median survival time; RPA, Recursive Partitioning Analysis; GPA, Graded Prognostic Assessment; SIR, Score Index for Radiosurgery; BS-BM, Basic Score for Brain Metastases; GGS, golden grading system