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  • Title: Effect of continuation treatment on residual symptoms in late-life depression: how well is "well"?
    Author: Opdyke KS, Reynolds CF, Frank E, Begley AE, Buysse DJ, Dew MA, Mulsant BH, Shear MK, Mazumdar S, Kupfer DJ.
    Journal: Depress Anxiety; ; 4(6):312-9. PubMed ID: 9166659.
    Abstract:
    UNLABELLED: The objectives of this report were (1) to describe residual depressive symptoms in elderly patients during continuation therapy with combined nortriptyline and interpersonal psychotherapy; (2) to determine which symptoms were persistent; (3) to determine the clinical correlates of residual depressive symptoms; and (4) to document distinct response pattern clusters during combined continuation therapy. METHOD: Box plot analyses of Hamilton depression scores and Global Assessment Scale scores, repeated twice monthly over 4 months, were conducted using data from 105 elderly depressives. Temporal trends in the data were examined via random regression analysis. Individual trajectories for each of the 105 patients were examined for patterns of response during continuation therapy. RESULTS: We observed a low mean Hamilton rating of 7 (SD = 2.3) at the start of continuation therapy and 5 (SD = 3.0) at the end. Both Hamilton and GAS scores showed modest but significant improvement over time. Hamilton variability was most apparent in symptoms of mood lowering, apathy, anxiety (psychological and somatic), feelings of guilt, anergia, insomnia, and loss of libido; other symptoms (retardation, agitation, hypochondriasis, loss of appetite, loss of weight, suicidal ideation, and loss of insight) showed clear resolution. A diagnosis of RDC situational depression was associated with higher levels of residual symptoms, while level of chronic medical burden, personality dysfunction, and social support were not. Examination of response patterns showed that a quarter of patients experienced one or more brief symptomatic exacerbations. CONCLUSION: On average, an excellent level of symptom resolution was achieved for most patients with Hamilton scores comparable to those seen in healthy elderly controls. These data support a position of therapeutic optimism in late-life depression and underscore full remission as an achievable therapeutic goal.
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