Table 2 Cox regression analysis

Age (older vs. younger than 69.6 years)

0.81–2.54

0.216

ECOG ( 2–3 vs. 0–1)

1.28–4.34

0.008

MGMT (negative vs. positive)^a

1.04–6.66

0.03

Extent of resection ( GTR vs. STR & Biopsy )

0.25–0.876

0.014

Ischemia (ischemia vs. no ischemia)^b

0.98–3.82

0.059

Time from surgery to RTx (earlier vs. later than 28 days)

0.61–1.89

0.816

Adjuvant CHT vs. No Adjuvant CHT

0.13–0.47

<0.001

RCHT vs. RT

0.21–0.69

0.002

Treatment for recurrent disease (Treatment vs. BSC)^c

0.02–0.17

<0.001