JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Electroencephalographic abnormalities and 5-year outcome in first-episode psychosis.

OBJECTIVE: To examine the relation of electroencephalographic abnormalities to 5-year outcomes in first-episode psychosis (FEP).

METHODS: Patients (n = 103) had their baseline electroencephalogram (EEG) classified by modified Mayo Clinic criteria. Symptoms and psychosocial functioning were rated after 5 years of treatment.

RESULTS: Dysrhythmic EEG was associated with persistence in positive and negative symptoms of psychoses and poorer psychosocial functioning at 5-year follow-up, independently of other characteristics, such as duration of untreated illness or premorbid adjustment. A higher percentage of people with comorbid substance use disorder had normal EEG.

CONCLUSIONS: Abnormal baseline EEG in FEP is associated with poorer 5-year symptomatic and functional outcome.

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