Data from the child health and education study, a national cohort study of children born in the United Kingdom in April 1970.9 The table shows the number of previously normal children with febrile convulsions who developed epilepsy in the first 10 years of life
Type of febrile convulsion
No of children with febrile convulsions
No (%) of children who developed epilepsy
Simple
287
3 (1)
Complex 1-154
95
6 (6)1-150
Multiple
55
2 (4)
Prolonged
32
2 (6)
Focal
17
5 (29)†
↵1-154 Some children had febrile convulsions with more than one complex feature.
↵1-150 p<0.05, †p<0.001 v children who had simple febrile convulsions.