Between ten and twenty percent of people with DS are thought to pass away before 10 years of age. The International Dravet Syndrome Epilepsy Action League (IDEA League) conducted a study in which they concluded that 31 of 833 DS patients passed away within 10 years.
This passage highlights the high mortality rate associated with Dravet Syndrome, particularly in children under the age of ten. The IDEA League's study provides evidence for this concern.