Evaluating how treatment adherence influences cognitive remediation outcomes

Area of Science:

• Neuroscience
• Psychiatry
• Clinical Psychology

Background:

• Cognitive Remediation (CR) effectively reduces cognitive and functional deficits in schizophrenia.
• Factors influencing varied treatment responses to CR remain incompletely understood.
• Treatment adherence has been proposed as a key factor but lacks systematic investigation.

Purpose of the Study:

• To examine the impact of completed Cognitive Remediation sessions on treatment outcomes in schizophrenia.
• To identify predictors of session attendance in Cognitive Remediation therapy.

Main Methods:

• Analysis of data from six randomized controlled trials comparing CR to control conditions.
• Instrumental variable analysis to assess the effect of session number on cognitive and functional outcomes.
• Logistic regression to identify predictors of session attendance.

Main Results:

• Increased CR sessions correlated with greater improvements in executive function and processing speed.
• Session number did not significantly influence working memory or functional outcomes.
• Younger age and higher baseline negative symptoms predicted greater session attendance.

Conclusions:

• Treatment adherence, indicated by higher session completion, is crucial for specific cognitive benefits in CR.
• Massed practice through more sessions appears beneficial for certain cognitive domains.
• Longer-term interventions may be necessary to observe significant functional improvements.