Table 1 Demographic and clinical data

Male (n)

10

5

8

11

No difference

Female (n)

7

10

3

3

IPI present (n)

7

10

8

n.a.

No difference

IPI absent (n)

10

5

3

n.a.

Age of first seizure (years)

3.8 ± 3.3

6.3 ± 7.5

7.4 ± 8.5

n.a.

No difference

Age when seizures became recurrent or age of onset (years)

10.0 ± 5.4

12.0 ± 9.7

13.5 ± 7.7

n.a.

No difference

Seizure type: CPS (n)

7

9

5

n.a.

No difference

Seizure type: SGS (n)

10

6

6

n.a.

Seizure frequency (monthly)

14.3 ± 11.4

12.6 ± 8.9

16.4 ± 11.2

n.a.

No difference

Right HS (n)

12

9

5

n.a.

No difference

Left HS (n)

5

4

5

n.a.

Bilateral HS (n)

0

2

1

n.a.

Right handedness (n)

14

14

11

n.a.

No difference

Left handedness (n)

2

0

0

n.a.

Bilateral handedness (n)

1

1

0

n.a.

Memory in verbal tasks: average or above (n)

7

7

2

n.a.

No difference

Memory in verbal tasks: below average (n)

10

8

9

n.a.

Memory in non-verbal tasks: average or above (n)

11

9

3

n.a.

No difference

Memory in non-verbal tasks: below average (n)

6

6

8

n.a.

Full-scale IQ

85.9 ± 7.7

84.9 ± 9.3

83.4 ± 7.1

n.a.

No difference

Years at school

7.1 ± 3.5

5.5 ± 3.5

6.3 ± 4.1

n.a.

No difference

Age at surgery (or at death for controls) (years)

33.5 ± 8.0

37.6 ± 11.7

40.0 ± 5.9

42.6 ± 16.0

No difference

Duration of epilepsy (years)

23.9 ± 8.2

24.9 ± 13.6

26.4 ± 8.6

n.a.

No difference

Collected side: right (n)

12

11

6

6

No difference

Collected side: left (n)

5

4

5

8

Surgical outcome: complete remission (n)

15

10

9

n.a.

No difference

Surgical outcome: only auras and/or fewer seizures (n)

2

5

2

n.a.