Insight and subjective measures of quality of life in chronic schizophrenia

Cynthia O. Siu, Philip D Harvey, Ofer Agid, Mary Waye, Carla Brambilla, Wing Kit Choi, Gary Remington

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Lack of insight is a well-established phenomenon in schizophrenia, and has been associated with reduced rater-assessed functional performance but increased self-reported well-being in previous studies. The objective of this study was to examine factors that might influence insight (as assessed by the Insight and Treatment Attitudes Questionnaire [ITAQ] or PANSS item G12) and subjective quality-of-life (as assessed by Lehman QoL Interview [LQOLI]), using the large National Institute of Mental Health Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) dataset. Uncooperativeness was assessed by PANSS item G8 ("Uncooperativeness"). In the analysis, we found significant moderating effects for insight on the relationships of subjective life satisfaction assessment to symptom severity (as assessed by CGI-S score), objective everyday functioning (as assessed by rater-administered Heinrichs-Carpenter Quality of Life scale), clinically rated uncooperativeness (as assessed by PANSS G8), and discontinuation of treatment for all causes (all P. <. 0.05 for statistical interaction between insight and subject QoL). Patients with chronic schizophrenia who reported being "pleased" or "delighted" on LQOLI were found to have significantly lower neurocognitive reasoning performance and poorer insight (ITAQ total score). Our findings underscore the importance of reducing cognitive and insight impairments for both treatment compliance and improved functional outcomes.

Original languageEnglish (US)
Pages (from-to)127-132
Number of pages6
JournalSchizophrenia Research: Cognition
Volume2
Issue number3
DOIs
StatePublished - Sep 1 2015

Keywords

  • Insight into illness
  • Neurocognition
  • Patient-rated quality of life
  • Schizophrenia
  • Subjective well-being

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Psychiatry and Mental health

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