The study population consisted of all patients diagnosed with an ICD-8 schizophrenia diagnosis (295) before the age of 18 in the period from 1971 throughout 1993 or an ICD-10 schizophrenia diagnosis (F20) in the period from 1994 throughout 2010.
The study population consisted of all patients diagnosed with an ICD-8 schizophrenia diagnosis (295) before the age of 18 in the period from 1971 throughout 1993 or an ICD-10 schizophrenia diagnosis (F20) in the period from 1994 throughout 2010.