Table 2.

Characteristics of patients and controls

	Left epilepsy (n = 21)	Right epilepsy (n = 19)	Controls (n = 25)
Mean age (years) (SD)	13.4 (2.8)	13.5 (3.0)	14.2 (2.7)
Sex (M:F)	11:10	6:13	14:11
Mean age at seizure onset (years) (SD)	7.7 (3.4)	8.6 (4.2)
Mean duration of epilepsy (years) (SD)	5.4 (3.5)	4.8 (2.9)
Mean seizure frequency per week (SD)	11.6 (17.7)	12.7 (27.1)
Mean number of medications (SD)	2.2 (0.7)	2.1 (0.7)
Location of epilepsy	L frontal (11); L temporal (6);	R frontal (11); R temporal (3);
	L frontotemporal (3);	R frontotemporal (1); R parietal (1);
	L frontoparietal (1)	R parietooccipital (1); R hemisphere (2)

SD, standard deviation.