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Table 2 Characteristics included in the prognostic instrument: Freedom from new brain metastases at 6 months following radiosurgery and the corresponding scoring points

From: A new prognostic instrument to predict the probability of developing new cerebral metastases after radiosurgery alone

  Rates of freedom from new brain metastases (%) Scoring points
Primary tumor type   
  Breast cancer (N = 21) 80 8
  Non-small cell lung cancer (N = 72) 67 7
  Malignant melanoma (N = 79) 54 5
  Other tumors(N = 42) 57 6
Number of cerebral metastases   
  1 lesion (N = 132) 70 7
  2 or 3 lesions (N = 82) 48 5
Extra-cerebral metastases   
  No (N = 88) 69 7
  Yes (N = 126) 56 6