Misdiagnosis, duration of untreated illness (DUI) and outcome in bipolar patients with psychotic symptoms: A naturalistic study

A. Carlo Altamura, Massimiliano Buoli, Alice Caldiroli, Lea Caron, Claudia Cumerlato Melter, Cristina Dobrea, Michela Cigliobianco, Francesco Zanelli Quarantini

Research output: Contribution to journalArticle

Abstract

Background A number of data show the negative role of duration of untreated illness (DUI) on outcome in mood disorders, but no investigation has been carried out about the impact of this variable in bipolar disorder (BD) with psychotic symptoms. Clinical experience shows that many bipolar patients with psychotic symptoms receive other diagnoses and often are chronically treated with first generation antipsychotics, with the effect to reduce duration of untreated psychosis/untreated episode with psychotic symptoms (DUP), but not DUI. Purpose of the study was to define the rate of misdiagnosis and the impact of DUP/DUI on outcome of bipolar patients with psychotic symptoms. Method Clinical information (DUP, DUI, first received diagnosis) about bipolar outpatients with psychotic symptoms (N=240) were extrapolated through a retrospective review of the clinical charts, Lombardy database and, if necessary, through clinical interviews with patients and their relatives. Outcome measures included psychiatric and substance abuse comorbidity, occupational status, Global Assessment of Functioning (GAF), number of hospitalizations and of suicidal attempts, number of depressive/manic recurrences. Patients were divided in two groups according to the DUP (1 year) and DUI (8 years) median, and the groups were compared through analyses of variance (ANOVAs) for continuous variables or χ2 tests for dichotomous ones. Multivariate analysis of variance (MANOVA) with duration of illness as covariate was then performed to eliminate the effect of this variable. Finally, binary logistic regressions were performed considering age at onset, DUI, DUP as independent variables and outcome variables as dependent ones (presence of hospitalizations/suicidal attempts, GAF scores8 years presented higher number of hospitalizations (F=6.04, p=0.015), higher number of manic recurrences (F=5.25, p=0.023), higher number of depressive recurrences (F=7.13, p=0.008) and lower GAF scores (F=17.74, p

Original languageEnglish
Pages (from-to)70-75
Number of pages6
JournalJournal of Affective Disorders
Volume182
DOIs
Publication statusPublished - Aug 15 2015

Keywords

  • Duration of untreated illness (DUI)
  • Misdiagnosis
  • Outcome
  • Psychotic bipolar disorder

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology
  • Medicine(all)

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