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The article you requested is

Prevalence and Treatment Outcome in Anxious Versus Nonanxious Depression: Results From the German Algorithm Project

J Clin Psychiatry 2010;71(8):1047-1054
Copyright 2010 Physicians Postgraduate Press, Inc.

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Objective: The objective of this study was to explore the prevalence of anxious depression in an inpatient population, to describe its clinical and sociodemographic correlates, and to compare treatment outcomes between patients with anxious and nonanxious depression. Furthermore, the efficacy of algorithm-guided treatment versus treatment as usual in patients with anxious versus nonanxious depression was evaluated.

Method: Data were collected on 429 inpatients with the diagnosis of a depressive episode (according to ICD-10) and a score of 15 on the 21-item Hamilton Depression Rating Scale (HDRS-21). The German Algorithm Project, phase 3 (GAP3), was conducted between 2000 and 2005 in 10 psychiatric departments throughout Germany. A baseline HDRS-21 anxiety/somatization factor score of 7 was considered indicative of anxious depression. Remission was defined as an HDRS-21 score 9. To evaluate the efficacy of algorithm-guided treatment, patients were randomly assigned into 3 groups: 2 different treatment algorithms or treatment as usual.

Results: The prevalence of anxious depression was 49%. Patients with anxious depression were more likely than those with nonanxious depression to be older (mean ± SD = 45.3 ± 12.8 vs 42.9 ± 12.0 years, odds ratio [OR] = 1.02 [95% CI, 1.00–1.03], P = .046), retired (70% vs 30%, OR = 3.09 [95% CI, 1.70–5.62], P = .000), without school qualification (74% vs 26%, OR = 3.11 [95% CI, 1.09–8.83], P = .035), more severely depressed (mean ± SD HDRS-21 score = 20.1 ± 5.0 vs 18.5 ± 4.4, OR = 1.08 [95% CI, 1.03–1.12], P = .001), and more likely to have a longer duration of the current episode (mean ± SD = 20.9 ± 26.2 vs 13.7 ± 14.3 weeks, OR = 1.02 [95% CI, 1.01–1.03], P = .011). Patients with anxious depression were more likely to display a variety of melancholic features. In patients with anxious depression compared to those with nonanxious depression, remission was less likely to be achieved (48.6% vs 61.5%, OR = 0.63 [95% CI, 0.42–0.92], P = .018) and took longer to occur (mean ± SD = 44 ± 3.4 vs 30 ± 2.8 days, HR = 0.65 [95% CI, 0.50–0.85], P = .001). There was no significant interaction with the treatment mode with regard to remission (Wald = 0.20, P = .890).

Conclusions: Anxious depression is common in patients diagnosed with depression. The poorer treatment outcome in patients with anxious depression demonstrates the need to address the issue of specific treatment strategies for this subgroup. However, anxious depression has no moderating effect on the efficacy of algorithm-guided treatment.

Trial Registration: http://www.germanctr.de/ Identifier: DRKS00000161

J Clin Psychiatry 2010;71(8):1047–1054

Submitted: August 28, 2009; accepted March 15, 2010.

Online ahead of print: July 13, 2010 (doi:10.4088/JCP.09m05650blu).

Corresponding author: Katja Wiethoff, PhD, Charité—Universitätsmedizin Berlin, Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charitéplatz 1, 10117 Berlin, Germany (katja.wiethoff@charite.de).