Cognitive and adaptive behavioural outcome were studied in the identified s
urvivors of a population based study of non-traumatic coma (NTC) in childho
od. Children were assessed early (six weeks) and late (12 months) after NTC
. At least 7% of those children in whom no suspicions of prior neurodevelop
mental morbidity existed showed moderate or severe disability following NTC
. Children over 2 years of age at insult showed some improvement between ea
rly and late assessments; however, children below 2 years showed no improve
ment. Differing age at insult effects were observed between aetiological gr
oups. A relation between early age at first insult and poor outcome was par
ticularly evident among children experiencing NTC caused by epilepsy.