Table 3.

Baseline characteristics of participants excluding the patients with seizure attack before operation.

Variable	Seizure after operation		P value
	Yes	No
Age (years) at operation			0.600
≥60	7/43	36/43
<60	21/105	84/105
Gender			0.257
male	5/39	34/39
female	23/109	86/109
The course of disease(years)			0.028
<1 year	22/118	96/118
1–5years	4/20	16/20
>5 years	2/10	8/10
Maximum cross-sectional area			0.384
≤15	15/90	75/90
>15	13/58	45/58
Location of tumor			0.045
non-skull base location	33/108	75/108
skull base location	6/40	34/40
Multiple tumor			0.504
Yes	2/7	5/7
No	26/141	115/141
Adjacent to the cortex			0.756
Yes	17/86	69/86
No	11/62	51/62
Peritumoral brain edema			0.645
yes	15/86	71/86
no	10/62	52/62
Hydrocephalus			0.002
yes	6/11	5/11
No	22/137	115/137
WHO classification			0.575
I level	25/136	111/136
II/III level	3/12	9/12
Peritumoral adhesion			0.440
yes	17/99	82/99
no	11/49	38/49
AEDs			0.001
no	7/80	73/80
Prophylactic AED treatment	21/68	47/68