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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