Optimising screening for cognitive dysfunction in bipolar disorder: Validation and evaluation of objective and...

Area of Science:

• Neuroscience
• Psychiatry
• Clinical Psychology

Background:

• Cognitive impairment is a significant issue in bipolar disorder, impacting patients' daily lives and social functioning.
• Understanding the relationship between cognitive deficits and socio-occupational capacity is crucial for effective treatment.

Purpose of the Study:

• To validate and evaluate instruments for screening and monitoring cognitive impairments in bipolar disorder.
• To enhance the understanding of the association between cognitive measures and socio-occupational capacity.

Main Methods:

• The study involved patients with bipolar disorder (n=84) and healthy controls (n=68).
• Participants were assessed using the Screen for Cognitive Impairment in Psychiatry (SCIP), Cognitive Complaints in Bipolar Disorder Rating Scale (COBRA), neuropsychological tests, and subjective rating scales.
• Socio-occupational function and affective symptoms were evaluated using established scales, with validity assessed through correlation and Receiver-Operating-Characteristic analyses.

Main Results:

• Both SCIP and COBRA showed strong correlations with established cognitive measures, indicating good validity.
• The SCIP demonstrated superior sensitivity and specificity in detecting cognitive dysfunction compared to COBRA or a combined approach.
• While objective and subjective cognitive impairments were weakly correlated, both were linked to difficulties in socio-occupational functioning.

Conclusions:

• The SCIP and COBRA are validated tools for identifying objective and subjective cognitive impairment in bipolar disorder.
• Objective screening for cognitive dysfunction, particularly using the SCIP, is recommended for individuals with bipolar disorder.