Background There is still debate as to which features, types or components of primary care interventions are associated with improved depression outcomes. Previous reviews have focused on components of collaborative care models in general practice settings. This paper aims to determine the effective components of depression care in primary care through a systematic examination of both general practice and community based intervention trials. Methods Fifty five randomised and controlled research trials which focused on adults and contained depression outcome measures were identified through PubMed, PsycInfo and the Cochrane Central Register of Controlled Trials databases. Trials were classified according to the components involved in the delivery of treatment, the type of treatment, the primary focus or setting of the study, detailed features of delivery, and the discipline of the professional providing the treatment. The primary outcome measure was significant improvement on the key depression measure. Results Components which were found to significantly predict improvement were the revision of professional roles, the provision of a case manager who provided direct feedback and delivered a psychological therapy, and an intervention that incorporated patient preferences into care. Nurse, psychologist and psychiatrist delivered care were effective, but pharmacist delivery was not. Training directed to general practitioners was significantly less successful than interventions that did not have training as the most important intervention. Community interventions were effective. Conclusions Case management is important in the provision of care in general practice. Certain community models of care (education programs) have potential while others are not successful in their current form (pharmacist monitoring).

Objective: To systematically review current research evidence of associations between improvement in parents' depression and their children's psychopathology. Method: Relevant studies were identified using PsycINFO (1806-2007) and Medline (1950-2007). The search terms used were "depression," "postpartum depression," "treatment," "mothers," "fathers," "parents," "offspring," "mother child relations," and "father child relations." The reference sections of identified articles were also examined for additional relevant articles. Open and controlled clinical trials and observational studies of depressed parents that also included psychological and behavioral assessments of offspring 18 years of age or younger were included in the review. Results: Ten studies meeting broad criteria for inclusion were reviewed. These studies varied considerably in sample, treatment, assessment, and analysis. Based on the few studies, there is some evidence of associations between successful treatment of parents' depression and improvement in children's symptoms and functioning, but treatment of postpartum depression may not be sufficient for improving cognitive development, attachment, and temperament in infants and toddlers. Conclusions: Due to the public health implications of the findings, further study of the effects of improvement in parental depression on child psychopathology is warranted. These studies need to examine the precise relation between parental and child symptoms, the differential effect of parents' treatment with psychotherapy versus medication, the effect of fathers' as well as mothers' symptomatic improvement on children, and mediators and moderators of the relation between parental improvement and child psychopathology.