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  • Title: Trajectories of medication attitudes and adherence behavior change in non-adherent bipolar patients.
    Author: Levin JB, Tatsuoka C, Cassidy KA, Aebi ME, Sajatovic M.
    Journal: Compr Psychiatry; 2015 Apr; 58():29-36. PubMed ID: 25617964.
    Abstract:
    OBJECTIVES: While medication treatment is necessary for the successful management of bipolar disorder (BD), non-adherence rates are up to 60%. Although medication attitudes are believed to be relevant to adherence behavior, few studies have investigated the trajectories of adherence change. This study evaluated attitudinal correlates of adherence conversion in 86 poorly adherent individuals with BD. METHODS: This secondary analysis pooled data from two uncontrolled prospective trials of customized adherence enhancement (CAE), a psychosocial intervention delivered over 4-6 weeks. Poor adherence was defined as missing at least 20% of prescribed BD medication based on the self-reported Tablets Routine Questionnaire (TRQ). The sample was dichotomized into converters who achieved good adherence (N=44) and non-converters who remained poorly adherent (N=21). Converters vs. non-converters were compared on adherence, attitudes, and symptoms at baseline, 6 weeks and 3 months. RESULTS: At baseline, converters and non-converters were similar demographically and clinically, but converters were less non-adherent (32% doses missed) than non-converters (59% missed). At 6 weeks, converters had better attitudes than non-converters. At 3 months, converters maintained improvements, but group differences were less pronounced due to some improvement in non-converters. Converters had better adherence at 3 months and trajectories differed for the groups on attitudes. Symptoms gradually improved for both converters and non-converters. CONCLUSIONS: Over two-thirds of poorly adherent BD patients who received CAE converted to good adherence. Improved medication attitudes may be a driver of improved adherence behavior and ultimately reduce BD symptoms.
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