Table 3.

Multivariate predictors of seizure reduction and seizure freedom at 3 months

	Seizure Freedom			Seizure Reduction
	OR	95% CI	P	OR	95% CI	P
Tumor type
Oligodendroglioma or oligoastrocytoma	1			1
Astrocytoma	5.64	[0.87, 36.48]	.069	3.5	[0.43, 28.59]	.243
Tumor grade, WHO
II	1			1
III	5.93	[0.86, 40.72]	.070	0.68	[0.09, 5.03]	.709
Extent of surgery
Biopsy	1			1
Partial/subtotal resection	1.45	[0.32, 6.51]	.624	3.05	[0.60, 15.66]	.181
Timing of radiotherapy
Early	1			1
Late	3.33	[0.76, 14.59]	.111	8.4	[1.36, 51.68]	.022
Seizure duration (log)*	2.27	[1.25, 4.12]	.007	2.77	[1.21, 6.34]	.016

*OR estimated excluding timing of radiotherapy.