Background: Depression in the elderly is mainly treated by primary care physicians; the treatment is often suboptimal because of the limited resources available in pri- mary care. New models of care in which treatment by a primary care physician is supplemented by the provision of brief, low-threshold interventions mediated by care managers are showing themselves to be a promising approach.
Methods: In this open, cluster-randomized, controlled study, we sought to determine the superiority of a model of this type over the usual form of treatment by a primary care physician. Patients in primary care aged 60 and above with moderate depres- sive manifestations (PHQ-9: 10-14 points) were included in the study. The primary endpoint was the percentage of patients in remission (score <5 on the Patient Health Questionnaire, PHQ-9) after the end of the intervention (12 months after baseline). The study was registered in the German Clinical Studies Registry (Deutsches Register für Klinische Studien) with the number DRKS00003589.
Results: 71 primary care physicians entered 248 patients in the study, of whom 109 were in the control group and 139 in the intervention group. In an intention-to-treat analysis, the remission rate at 12 months was 25.6% (95% confidence interval [18.3; 32.8]) in the intervention group and 10.9% [5.4; 16.5]) in the control group (p = 0.004).
Conclusion: This study demonstrates the superiority of the new care model in the primary care setting in Germany, as has been found in other countries.