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Table 2 Study population

From: Comparative performances of prognostic indexes for breast cancer patients presenting with brain metastases

Patient characteristics Number of patients %
Age at breast cancer diagnosis (years)   
 Median, range 50 (23–82)
Age at BM diagnosis (years)   
 Median, range 55 (25–85)
Time between initial diagnosis and BM diagnosis (months)   
 Median, range 39.4 (0–319.2)
Hormone receptor status   
 Positive 119 47.6
 Negative 131 52.4
HER-2 status   
 Positive 109 43.6
 Negative 141 56.4
Karnofsky Performance status   
 100 66 26.4
 80–90 119 47.6
 60–70 28 11.2
 40–50 32 12.8
 10-30 5 2
Extra-cerebral metastases at BM diagnosis   
 Yes 219 87.6
 No 31 12.4
Systemic treatment after BM diagnosis   
 Chemotherapy   
  Yes 177 70.8
  No 73 29.2
 Anti-HER2 treatment for HER2+ patients   
  Yes 20 18.3
  No 89 81.7
  1. BM, Brain Metastases, KPS, Karnofsky Performance Status.