Table 2 Logistic regression analysis on recurrence pattern (in-field vs. marginal/distant), N = 31, ns – not significant, meth – MGMT methylated, HR – h azard ratio

Age (<60 y, ≥ 60 y)

ns (p = 0.423)

1.875

MGMT (meth/not meth)

ns (p = 0.361)

2.00

PTV size

p = 0.032

0.986

WHO grade at relapse (III/IV)

ns (p = 0.165)

0.200

Sex (male/female)

ns (p = 0.914)

0. 923