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Neuropsychological performance of psychotic patients in community care: results from the UK700 study

Research output: Contribution to journalConference paper

UK700 Grp, J A Barber, J van Os, R M Murray

Original languageEnglish
Pages (from-to)81-91
Number of pages11
JournalActa Psychiatrica Scandinavica
Publication statusPublished - 2001
Event9th Congress of the Association-of-European-Psychiatrists - COPENHAGEN, Denmark
Duration: 1 Jan 2001 → …

King's Authors


Objective: To compare cognitive performance in chronic schizophrenic and affective psychotic patients maintained in community care.

Method: We studied a sample of community-based patients (n=707) with chronic psychotic disorders. Neuropsychological assessment was completed using the National Adult Reading Test (NART) and the Trail Making Test (TMT).

Results: Affective psychotic patients had higher premorbid IQ than schizophrenic patients before adjustment for confounding factors (P=0.03); however, after adjustment for ethnic group and social class this became non-significant (P=0.19). There were no significant differences between groups on the TMT, parts A or B.

Conclusion: Unlike studies suggesting that schizophrenic patients are more cognitively impaired than affective psychotic patients, our study suggests a degree of cognitive homogeneity between those patients who develop a chronic illness. Measures of premorbid IQ suggest that this cognitive homogeneity exists prior to the onset of illness.

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