Table 4. The logistics regression analysis of the factors associated with brain necrosis recurrence.

	P value
Gender	0.84
Age	0.87
Bevacizumab treatment history	0.40
BED	0.73
Primary tumor location	0.79
The medication cycles of first course with bevacizumab	0.46
Volume of necrosis before bevacizumab treatment	0.92
Residual necrosis after the first course bevacizumab treatment	0.38
Follow up time after the first course bevacizumab treatment	0.032