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Table 3 Demographic and clinical features of patients with Dravet syndrome (n = 45)

From: Few individuals with Lennox-Gastaut syndrome have autism spectrum disorder: a comparison with Dravet syndrome

Gender (male)

32 (71.1%)

Age at conclusion of study (years)

11.3 ± 5.1

Age at evaluation (years)

8.2 ± 3.7

Age at seizure onset (months)

6.2 ± 3.7

Family history of febrile seizures or epilepsy

16 (35.6%)

Antecedent febrile seizures

35 (77.8%)

Seizure type

 GTCS/secondary GTCS

40 (88.9%)

 Complex partial

29 (64.4%)

 Myoclonic

18 (40.0%)

 Atypical absence

15 (33.3%)

 Simple partial

9 (20.0%)

 Atonic

4 (8.9%)

 Tonic

1 (2.2%)

Status epilepticus

28 (62.2%)

EEG characteristics

 Normal

1 (2.2%)

 Slow background activity

25 (55.6%)

 Only focal discharge

14 (31.1%)

 Only generalized discharge

5 (11.1%)

 Focal and generalized discharge

25 (55.6%)

MRI abnormality

13 (28.9%)

Treatment with ≥ 3 AEDs

36 (80.0%)

Seizure free

0 (0%)

  1. Value was expressed as n (%) or means ± SD
  2. AEDs antiepileptic drugs, GTCS generalized tonic-clonic seizure