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Awareness of illness moderates self-assessment of psychotic symptoms

Objective: Self-reports or patient-reported outcome measures are seldom used in psychosis due to concerns about the ability of patients to accurately report their symptomatology, particularly in cases of low awareness of illness. The aim of this study was to assess the effect of insight on the accur...

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Bibliographic Details
Published in:Australian and New Zealand journal of psychiatry 2022-10, Vol.56 (10), p.1287-1294
Main Authors: Martinez Agulleiro, Luis, de Filippis, Renato, Rosson, Stella, Patil, Bhagyashree, Prizgint, Lara, Talasazan, Nahal, Meltzer, Herbert Y, Kane, John M, Gibbons, Robert D, Guinart, Daniel
Format: Article
Language:English
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Summary:Objective: Self-reports or patient-reported outcome measures are seldom used in psychosis due to concerns about the ability of patients to accurately report their symptomatology, particularly in cases of low awareness of illness. The aim of this study was to assess the effect of insight on the accuracy of self-reported psychotic symptoms using a computerized adaptive testing tool (CAT-Psychosis). Methods: A secondary analysis of data drawn from the CAT-Psychosis development and validation study was performed. The Brief Psychiatric Rating Scale and the Scale of Unawareness of Mental Disorders were administered by clinicians. Patients completed the self-reported version of the CAT-Psychosis. Patients were median-split regarding their insight level to compare the correlation between the two psychosis severity measures. A subgroup sensitivity analysis was performed only on patients with schizophrenia spectrum disorders. Results: A total of 159 patients with a psychotic disorder who completed both CAT-Psychosis and Scale of Unawareness of Mental Disorders were included. For the whole sample, CAT-Psychosis scores showed convergent validity with Brief Psychiatric Rating Scale ratings (r = 0.517, 95% confidence interval = [0.392, 0.622], p 
ISSN:0004-8674
1440-1614
DOI:10.1177/00048674211057480