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Table 2 Follow-up and overall survival

From: Surgery of highly eloquent gliomas primarily assessed as non-resectable: risks and benefits in a cohort study

  mean follow-up (months) mean overall survival (months)
primary recurrent primary recurrent
WHO grade I 47.9 - alive -
WHO grade II 38.3 26.0 all alive all alive
WHO grade III 21.6 22.0 all alive 20.5
WHO grade IV 8.6 7.9 5.1 6.0
  1. Columns 2 & 3: mean follow-up for alive patients. Columns 4 & 5: overall survival of deceased patients. This series only contains one patient with initially diagnosed WHO grade I glioma. When patients are alive, mean overall survival equals to mean follow-up.