Factors PFS OS
Months Log rank p Months Log rank p
Age (yr) < 60 6   0.0339 15 0.2125
≥ 60 14 14
Karnofsky ≤ 70 6   0.4584 13   0.6207
Performance Score > 70 6 15
EGFR +ve/PTEN -ve 9   0.0058 20   0.0078
PTEN +ve/EGFR -ve 6 13
EGFR/PTEN (Both +ve) 6 9
EGFR/PTEN (Both -ve) 6 14
  Procedure Gross Total Resection 7   0.0001 17   0.1112
Sub Total Resection 5 15
Biopsy 3 8
Table 5: Factors affecting progression free survival and overall survival.*95% CI at (---) could not be developed due to the sub sample that was too small.