The evolving understanding of major depression epidemiology: implications for practice and policy

Major depression diagnoses among patients with systemic sclerosis: baseline and one-month followup

OBJECTIVE

Depression is common in many rheumatic diseases and is associated with poor prognosis. No studies of patients with any rheumatic diseases, however, have assessed the stability of major depressive disorder (MDD) diagnoses over time. The objective of the present study was to assess the stability of MDD diagnoses among patients with systemic sclerosis (SSc; scleroderma), a rare autoimmune rheumatic disease, across 2 assessments approximately 1 month apart.

METHODS

SSc patients were recruited from 7 Canadian Scleroderma Research Group Registry sites (April 2009 to June 2012). Current (30-day) MDD was assessed with the Composite International Diagnostic Interview at baseline and approximately 1 month later.

RESULTS

Among 309 patients with baseline assessments who received followup assessments an average of 34 days later, prevalence of 30-day MDD was 4% (95% confidence interval [95% CI] 2%-7%; n = 12) at baseline and 5% (95% CI 3%-8%; n = 16) at followup. Only 3 of 12 patients (25% [95% CI 9%-53%]) with MDD at baseline had MDD 1 month later.

CONCLUSION

Most patients with SSc who meet criteria for MDD appear to experience mild, time-limited episodes of low mood that often resolve on their own without specific treatment. Consistent with international guidelines on depression management in nonpsychiatric settings, "watchful waiting" or "active monitoring" is a good strategy for SSc patients with mild depression to avoid unnecessary treatment among those whose symptoms may be transient and may resolve without medical intervention.

General practitioners' choices and their determinants when starting treatment for major depression: a cross sectional, randomized case-vignette survey

Background

In developed countries, primary care physicians manage most patients with depression. Relatively few studies allow a comprehensive assessment of the decisions these doctors make in these cases and the factors associated with these decisions. We studied how general practitioners (GPs) manage the acute phase of a new episode of non-comorbid major depression (MD) and the factors associated with their decisions.

Methodology/Principal Findings

In this cross-sectional telephone survey, professional investigators interviewed an existing panel of randomly selected GPs (1249/1431, response rate: 87.3%). We used case-vignettes about new MD episodes in 8 versions differing by patient gender and socioeconomic status (blue/white collar) and disease intensity (mild/severe). GPs were randomized to receive one of these 8 versions. Overall, 82.6% chose pharmacotherapy; among them GPs chose either an antidepressant (79.8%) or an anxiolytic/hypnotic alone (18.5%). They rarely recommended referral for psychotherapy alone, regardless of severity, but 38.2% chose it in combination with pharmacotherapy. Antidepressant prescription was associated with severity of depression (OR = 1.74; 95%CI = 1.33–2.27), patient gender (female, OR = 0.75; 95%CI = 0.58–0.98), GP personal characteristics (e.g. history of antidepressant treatment: OR = 2.31; 95%CI = 1.41–3.81) and GP belief that antidepressants are overprescribed in France (OR = 0.63; 95%CI = 0.48–0.82). The combination of antidepressants and psychotherapy was associated with severity of depression (OR = 1.82; 95%CI = 1.31–2.52), patient's white-collar status (OR = 1.58; 95%CI = 1.14–2.18), and GPs' dissatisfaction with cooperation with mental health specialists (OR = 0.63; 95%CI = 0.45–0.89). These choices were not associated with either GPs' professional characteristics or psychiatrist density in the GP's practice areas.

Conclusions/Significance

GPs' choices for treating severe MD complied with clinical guidelines better than those for mild MD; GPs rarely recommended psychotherapy alone but rather as a complement to pharmacotherapy. Their decisions were mainly influenced by personal life experience and attitudes regarding treatment more than by professional characteristics. These results call into question the methods and content of continuing medical education in France about MD management.

Escala Baptista de Depressão (Versão Adulto) - EBADEP-A: validade convergente e estabilidade temporal

Os objetivos principais desta pesquisa foram avaliar evidências de validade convergente entre a Escala Baptista de Depressão (Versão Adulto) - EBADEP-A e o Inventário de Depressão de Beck - BDI-II, além de avaliar a estabilidade temporal da EBADEP-A por intermédio do teste e reteste em um período de um mês. Fizeram parte da pesquisa 173 universitários de uma amostra de conveniência com média de idade de 24,45 (DP=8,45), a maioria mulheres (87,9%). Após um mês, 65 participantes, a maioria mulheres (90,8%), com média de 21 anos (DP=5,48) responderam novamente os instrumentos. Os resultados demonstraram, de acordo com critérios internacionais, excelentes índices de correlação entre ambas as escalas, bem como no teste e reteste, demonstrando adequadas qualidades psicométrica da EBADEP-A também nesses quesitos, comprovando outros estudos já realizados. Esses resultados e as limitações do estudo também são discutidos.

Recovery from depressive symptoms over the course of physical therapy: a prospective cohort study of individuals with work-related orthopaedic injuries and symptoms of depression

STUDY DESIGN

Prospective cohort.

OBJECTIVES

(1) To determine the trajectory of depressive symptoms over the course of physical therapy, (2) to identify variables that best predict the resolution of depressive symptoms, and (3) to explore the relationship between recovery from depressive symptoms and long-term outcomes.

BACKGROUND

Twenty-five percent to 50% of patients referred to physical therapy for orthopaedic injuries suffer from symptoms of depression. Depressive symptoms have been identified as an influential risk factor for problematic response to physical therapy. Despite these findings, there is a dearth of research specifically exploring the trajectory and determinants of patients' depressive symptoms over the course of physical therapy, which has impeded the evidence-based management of patients with depressive symptoms.

METHODS

One hundred six patients with work-related musculoskeletal injuries and symptoms of depression received 7 weeks of physical therapy and were followed 1 year after treatment onset. Pain intensity, depressive symptoms, and other psychosocial factors were evaluated throughout treatment, and data were collected at 1-year follow-up.

RESULTS

Depressive symptoms resolved in 40% of patients, and resolution was linked to pain and disability at 1-year follow-up. Persistence of depressive symptoms at treatment completion was predicted by elevated levels of depressive symptoms and pain catastrophizing at pretreatment, and by lack of improvement in levels of depressive symptoms and pain self-efficacy at midtreatment.

CONCLUSION

For many patients, depressive symptoms resolve over the course of physical therapy, and resolution is associated with long-term improvements in pain and disability. These findings will help identify patients whose depressive symptoms are least likely to respond to physical therapy and may therefore warrant additional treatment.

Age and birth cohort differences in depression in repeated cross-sectional surveys in England: the National Psychiatric Morbidity Surveys, 1993 to 2007

BACKGROUND

The National Psychiatric Morbidity Survey (NPMS) programme was partly designed to monitor trends in mental disorders, including depression, with comparable data spanning 1993 to 2007. Findings already published from this programme suggest that concerns about increasing prevalence of common mental disorders (CMDs) may be unfounded. This article focuses on depression and tests the hypothesis that successive birth cohorts experience the same prevalence of depression as they age.

METHOD

We carried out a pseudo-cohort analysis of a sequence of three cross-sectional surveys of the English household population using identical diagnostic instruments. The main outcome was ICD-10 depressive episode or disorder. Secondary outcomes were the depression subscales of the Clinical Interview Schedule - Revised (CIS-R).

RESULTS

There were 8670, 6977 and 6815 participants in 1993, 2000 and 2007 respectively. In men, the prevalence of depression increased between cohorts born in 1943-1949 and 1950-1956 [odds ratio (OR) 2.5, 95% confidence interval (CI) 1.4-4.2], then remained relatively stable across subsequent cohorts. In women, there was limited evidence of change in prevalence of depression. Women born in 1957-1963, surveyed aged 44-50 years in 2007, had exceptionally high prevalence. It is not clear whether this represents a trend or a quirk of sampling.

CONCLUSIONS

There is no evidence of an increase in the prevalence of depression in male cohorts born since 1950. In women, there is limited evidence of increased prevalence. Demand for mental health services may stabilize or even fall for men.

Relationships of Alcohol Use and Alcohol Problems to Probable Anxiety and Mood Disorder

We examine the effects of alcohol consumption and problem drinking on probable anxiety and mood disorder (AMD). Data were taken from the 2000–2006 CAMH Monitor (N = 15,653) general population survey of Ontario adults. Scoring 4+ on the 12-item General Health Questionnaire defined probable AMD, as suggested by recent research. Logistic regression showed that respondents with alcohol problems had significantly increased odds of probable AMD, but those reporting moderate daily alcohol consumption (up to 2 drinks) had decreased odds of probable AMD compared to abstainers. These data replicate other recent research in suggesting that the relationship between alcohol and adverse psychological states, such as psychological distress and probable anxiety and mood disorder, may not be monotonic. Several ways in which selection bias could account for these findings are discussed, as well as other possible causative mechanisms.

Stepped care: a method to deliver increased access to psychological therapies

OBJECTIVE

To introduce stepped care as a method of organizing the delivery of treatments, and to consider the factors necessary for implementation.

METHOD

Stepped care is described within the context of strategies such as collaborative care that aim to increase access to mental health care through the improved coordination of care between primary and specialist mental health services. Results from the implementation of stepped care in the United Kingdom and elsewhere are used to highlight the factors required for introducing stepped care into routine services. Issues to address when implementing high-volume services for common mental health problems are derived from this experience.

RESULTS

Stepped care sits within the continuum of organizational systems, from situations where responsibility rests almost entirely with primary care clinicians to systems where all patients are managed by specialists for the entire duration of their treatment. Its core principles of delivering low-burden treatments first, followed by careful patient progress monitoring to step patients up to more intensive treatment, are easy to articulate but lead to considerable implementation diversity when services attempt to work in this manner. Services need to ensure they have specific staff competency training, including skills in delivering evidence-based treatments, access to telephony, and smart patient management informatics systems.

CONCLUSIONS

Stepped care can provide the delivery system for supported self-management. To be successful, health systems need high levels of clinical outcome data and appropriately trained workers. Further attention is required to ensure equity of access and to reduce patient attrition in these systems.

Does GP training in depression care affect patient outcome? - A systematic review and meta-analysis

Background

Primary care practices provide a gate-keeping function in many health care systems. Since depressive disorders are highly prevalent in primary care settings, reliable detection and diagnoses are a first step to enhance depression care for patients. Provider training is a self-evident approach to enhance detection, diagnoses and treatment options and might even lead to improved patient outcomes.

Methods

A systematic literature search was conducted reviewing research studies providing training of general practitioners, published from 1999 until May 2011, available on the electronic databases Medline, Web of Science, PsycINFO and the Cochrane Library as well as national guidelines and health technology assessments (HTA).

Results

108 articles were fully assessed and 11 articles met the inclusion criteria and were included. Training of providers alone (even in a specific interventional method) did not result in improved patient outcomes. The additional implementation of guidelines and the use of more complex interventions in primary care yield a significant reduction in depressive symptomatology. The number of studies examining sole provider training is limited, and studies include different patient samples (new on-set cases vs. chronically depressed patients), which reduce comparability.

Conclusions

This is the first overview of randomized controlled trials introducing GP training for depression care. Provider training by itself does not seem to improve depression care; however, if combined with additional guidelines implementation, results are promising for new-onset depression patient samples. Additional organizational structure changes in form of collaborative care models are more likely to show effects on depression care.

Efficacy, safety and tolerability of Symbyax for acute-phase management of treatment-resistant depression

Treatment resistance is frequently encountered during the long-term care of patients with major depression. A number of 'next step' therapeutic options exist in such cases, including switching to an alternative antidepressant, combining antidepressants from different pharmacological classes, adding evidence-supported psychotherapies to ongoing antidepressant treatment and augmentation with a nonantidepressant drug. Augmenting antidepressants with atypical antipsychotic drugs has generated considerable clinical interest. Three atypical antipsychotics (aripiprazole, quetiapine and olanzapine) have received regulatory approval for adjunctive use with antidepressants for treatment-resistant major depression (TRD) in adults. Symbyax (olanzapine-fluoxetine combination or OFC), the combination of olanzapine and the selective serotonin-reuptake inhibitor fluoxetine, is also approved for this indication. The short-term effectiveness of OFC for TRD is supported by results of five published randomized, controlled, acute-phase studies of generally similar design. In each study, OFC was associated with rapid reduction in depressive symptoms. In two studies, significantly greater improvement in depressive symptoms occurred in OFC-treated patients at study end point compared with those who received antidepressant monotherapy. These effects appeared to be strongest in cases where antidepressant failure was established during the current depressive episode. Although OFC was well-tolerated, increases in body weight and prolactin concentration were greater with OFC than antidepressant monotherapy, and were similar to olanzapine monotherapy. Increases in random total cholesterol levels were greatest for OFC, and were significantly greater than those of olanzapine and antidepressant monotherapy. The long-term efficacy and tolerability of OFC for TRD has not been investigated, and the comparative effectiveness of OFC versus other next-step options is unknown. As such, the exact place of OFC among the available therapeutic options for TRD is not fully understood at this time.

Persistence and remission of psychiatric disorders in the quebec older adult population

OBJECTIVE

To document the remission and persistence of psychiatric disorders in Quebec's older adult population.

METHOD

Data came from the Enquête sur la santé des aînés (ESA) study conducted in 2005-2008 using a representative sample (n = 2784) of community-dwelling older adults.

RESULTS

The ESA study results indicate that 12% of respondents met the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria for depression, mania, anxiety disorders, or benzodiazepine drug dependency at the baseline interview. The results also indicate that the 12-month rate of patients with a persistent psychiatric condition was 19.4%. Sixty-seven percent of the patients in remission experienced a total recovery of their symptoms during the following year. The probability of presenting a persistent psychiatric condition or a partial remission after 1 year of follow-up, compared with those in total remission, did not vary according to sociodemographic characteristics. The results also showed that social support and the number of chronic health problems did not influence mental health at follow-up. However, results indicated that the use of health services (OR 7.4; 95% CI 3.72 to 14.55) and the change in the number of chronic health problems reported between baseline and the second interview (OR 1.2; 95% CI 1.06 to 1.34) increased the probability of patients with prevalent disorders at Time 1 having persistent disorders at Time 2.

CONCLUSION

Results suggest that a deterioration of physical health status was associated with the persistence of DSM-IV disorders in the elderly. These results also suggest that the use of mental health services is associated with severity of the mental illness.

The basis for improving and reforming long-term care. Part 4: identifying meaningful improvement approaches (segment 2)

While many aspects of nursing home care have improved over time, numerous issues persist. Presently, a potpourri of approaches and a push to "fix" the problem have overshadowed efforts to correctly define the problems and identify their diverse causes. This fourth and final article in the series (divided between last month's issue and this one) recommends strategies to make sense of improvement and reform efforts. This month's concluding segment covers additional proposed approaches. Despite the challenges of the current environment, all of the proposed strategies could potentially be applied with little or no delay. Despite having brought vast increases in knowledge, the research effort may be losing its traction as a formidable force for meaningful change. It is necessary to rethink the questions being asked and the scope of answers being sought. A shift to overcoming implementation challenges is needed. In addition, it is essential to address issues of jurisdiction (the apparent "ownership" of assessment and decision making over patient problems or body parts) and reductionism (the excessive management of these issues and problems without proper context) that result in fragmented and problematic care. Issues of knowledge and skill also need to be addressed, with greater emphasis on key generic and technical competencies of staff and practitioners, in addition to factual knowledge. There is a need to rethink the approach to measuring performance and trying to improve quality of care and services. There are significant limits to trying to use quality measures to improve outcomes and performance. Ultimately, vast improvement is needed in applying care principles and practices, independent of regulatory sources. Reimbursement needs to be revamped so that it helps promote care that is consistent with human biology and other key concepts. Finally, improving long-term care will require a coordinated societal effort. All social institutions and health care settings need to address their own shortcomings and contribute constructively in order to improve and reform nursing homes and health care generally. It is not helpful to scapegoat nursing homes for what are far more universal problems of care, practice, and performance.