“…We examined whether or not there was any relationship between etiology and each of the following 21 factors: (1) age at onset, (2) birth weight, (3) age of the mother, (4) number of siblings, (5) delayed development before the onset of spasms, (6) convulsions before the onset of spasms, (7) neurological abnormalities, (8) pneumoencephalographie abnormalities, (9) series (cluster) formation of the spasms, (10) laughing attacks, (11) sex, (12) pregnancy abnormalities, (13) delivery abnormalities, (14) neonatal abnormalities, (15) response to ACTH therapy, (16) relapse of seizures after ACTH therapy, (17) evolution into other types of fits, (18) seizures concomitant with spasms, (19) family history of epilepsy and other convulsive disorders, (20) seizure cessation at follow-up, and (21) mental and physical development at follow-up. The information on the above items was insufficient in some cases which were omitted from the analysis making the number of cases in some of the tables different.…”