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Journal of Clinical Psychopharmacology:
doi: 10.1097/JCP.0b013e31825d3763
Original Contributions

Case Manager- and Patient-Rated Alliance as a Predictor of Medication Adherence in First-Episode Psychosis

Montreuil, Tina C. MA*†‡; Cassidy, Clifford M. MSc*‡§; Rabinovitch, Mark MD; Pawliuk, Nicole MSc*; Schmitz, Norbert PhD‡§; Joober, Ridha MD, PhD*‡§; Malla, Ashok K. MD, FRCPC

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Abstract

Objective: The objective of this study was to evaluate the association between adherence to antipsychotic medication and working alliance (WA) ratings as reported separately by case manager (CM) and patient in first-episode psychosis (FEP) and to identify whether other factors previously related to adherence influence this relationship.

Methods: Adherence was evaluated every month in 81 participants who met criteria for a Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, psychotic disorder (affective or nonaffective) and were treated in a specialized early intervention program. Adherence was measured, taking into account information from patient and clinician reports and pill counting. The WA, as assessed by both CM and patient, was assessed using the Working Alliance Inventory.

Results: The WA was stable during the course of the study as rated by both patient and CM. The “task” domain of WA was the subdomain most significantly correlated to adherence in cross-sectional analysis. The WA as measured by CM at study baseline was a significant predictor of the number of subsequent months with “good” adherence independently of other variables, including adherence at treatment onset (β = 0.011; P = 0.020; 95% confidence interval, 0.002–0.020). However, the WA as measured by patients was not similarly predictive of subsequent adherence (β = 0.003; P = 0.31; 95% confidence interval, −0.003 to 0.010).

Conclusions: The CM-rated WA is a significant predictor of future medication adherence in FEP, suggesting that good alliance can improve adherence in this population.

© 2012 Lippincott Williams & Wilkins, Inc.

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