Cost-effectiveness and net benefit of enhanced treatment of depression for older adults with diabetes and depression

Depressive und Angststörungen bei somatischen Krankheiten

Depressiv-ängstliche Störungen sind bei den unterschiedlichen somatischen Erkrankungen häufig. Sie sind nicht nur als Reaktion auf die Situation der Erkrankung zu verstehen, sondern in ein komplexes Bedingungsgefüge eingebettet. Sie sind besonders häufig bei Erkrankungen, die das Zentralnervensystem oder endokrine Regulationssysteme direkt betreffen. Es besteht ein enger Zusammenhang zur Chronizität, Schwere und Prognose der Erkrankung. Eigenständige Effekte von diversen pharmakologischen Substanzgruppen sind wahrscheinlich.

What is the business case for improving care for patients with complex conditions?

INTRODUCTION

Patients with complex conditions account for a disproportionate share of health care spending. Although evidence indicates that care for these patients could be provided more efficiently, the financial impact of mechanisms to improve the care they receive is unclear.

DESIGN/METHODS

Numerous mechanisms-emphasizing patient self-management, care coordination, and evidence-based guidelines-aim to improve the quality of care and outcomes for patients with complex conditions. Assessing the overall "business case" for these mechanisms requires carefully estimating all relevant costs and financial benefits, then comparing them in present value terms. Mechanisms that are not cost-saving may still be implemented if they are cost-effective. We reviewed articles in peer-reviewed journals, as well as reports available on publicly accessible websites, which contained data about the business case for mechanisms to improve care for patients with complex conditions.

MAIN RESULTS

Published studies do not provide clear evidence that current mechanisms are cost saving. This literature also has several major methodological shortcomings with respect to providing an understanding of the business case for these mechanisms.

CONCLUSIONS

Further research using standardized methodologies is needed to understand the business case for mechanisms to improve care for patients with complex conditions. Implications for VA business case analyses include the necessity of establishing appropriate time horizons, scope of services, and target populations, as well as considering the impact of existing VA systems.

What do general medical guidelines say about depression care? Depression treatment recommendations in general medical practice guidelines

PURPOSE OF REVIEW

Depression is one of the most costly and prevalent mental disorders, and it often co-occurs in patients with general medical conditions. This review identifies the extent to which depression treatment is being addressed in guidelines for general medical illness treatment.

RECENT FINDINGS

We conducted a review of the literature published within the past year pertaining to depression treatment guidelines in medical care. We also conducted a systematic review of available practice guidelines listed by the Agency for Research and Quality to assess the extent to which depression treatment is being addressed in current general medical treatment guidelines. Overall, only a handful of articles addressed treatment of depression within the context of general medical care, and most only addressed screening. Among 199 available practice guidelines for general medical conditions, only 83 mentioned depression treatment, and the majority of these only addressed depression screening.

SUMMARY

To improve outcomes in patients with co-occurring general medical conditions, general medical guidelines should include specific recommendations for treating and co-managing depression. Additional strategies that facilitate the translation of guidelines into routine practice, address the management of multiple chronic illnesses, and reduce the stigma of mental illness are also needed.

Recommendations for treating depression in community-based older adults

OBJECTIVE

To present recommendations for community-based treatment of late-life depression to public health and aging networks.

METHODS

An expert panel of mental health and public health researchers and community-based practitioners in aging was convened in April 2006 to form consensus-based recommendations. When making recommendations, panelists considered feasibility and appropriateness for community-based delivery, as well as strength of evidence on program effectiveness from a systematic literature review of articles published through 2005.

RESULTS

The expert panel strongly recommended depression care management-modeled interventions delivered at home or at primary care clinics. The panel recommended individual cognitive behavioral therapy. Interventions not recommended as primary treatments for late-life depression included education and skills training, comprehensive geriatric health evaluation programs, exercise, and physical rehabilitation/occupational therapy. There was insufficient evidence for making recommendations for several intervention categories, including group psychotherapy and psychotherapies other than cognitive behavioral therapy.

CONCLUSIONS

This interdisciplinary expert panel determined that recommended interventions should be disseminated throughout the public health and aging networks, while acknowledging the challenges and obstacles involved. Interventions that were not recommended or had insufficient evidence often did not treat depression primarily and/or did not include a clinically depressed sample while attempting to establish efficacy. These interventions may provide other benefits, but should not be presumed to effectively treat depression by themselves. Panelists also identified primary prevention of depression as a much under-studied area. These findings should aid individual clinicians as well as public health decision makers in the delivery of population-based mental health services in diverse community settings.

Psychiatric disorders in patients presenting to the Emergency Department for minor injury

BACKGROUND

Thirty-five percent of all Emergency Department (ED) visits are for physical injury.

OBJECTIVES

To examine the proportion of patients presenting to an ED for physical injury with a history of or current Axis I/II psychiatric disorders and to compare patients with a positive psychiatric history, a negative psychiatric history, and a current psychiatric disorder.

METHODS

A total of 275 individuals were selected randomly from adults presenting to the ED with a documented anatomic injury but with normal physiology. Exclusion criteria were: injury in the previous 2 years or from medical illness or domestic violence; or reported treatment for major depression or psychoses. Psychiatric history and current disorders were diagnosed using the Structured Clinical Interview for the Diagnostic and Statistical Manual Disorders, 4th edition (DSM-IV), a structured psychiatric interview. Three groups (positive psychiatric history, negative psychiatric history, current psychiatric disorder) were compared using Chi-square and analysis of variance.

RESULTS

The sample was composed of men (51.6%) and women (48.4%), with 57.1% Black and 39.6% White. Out of this sample, 103 patients (44.7%) met DSM-IV criteria for a positive psychiatric history (n = 80) or a current psychiatric disorder (n = 43). A past history of depression (24%)exceeded the frequency of a history of other disorders (anxiety, 6%; alcohol use/abuse, 14%; drug use/abuse, 15%; adjustment, 23%; conduct disorders, 14%). Current mood disorders (47%) also exceeded other current diagnoses (anxiety, 9%; alcohol, 16%; drug, 7%; adjustment, 7%; personality disorders, 12%). Those with a current diagnosis were more likely to be unemployed (p <.001) at the time of injury.

CONCLUSIONS

Psychiatric comorbid disorders or a positive psychiatric history was found frequently in individuals with minor injury. An unplanned contact with the healthcare system (specifically an ED) for treatment of physical injury offers an opportunity for nurses to identify patients with psychiatric morbidity and to refer patients for appropriate therapy.

Improving quality of care for mental illness in an uninsured, low-income primary care population

OBJECTIVE

We assessed if an ongoing, multifaceted quality improvement program improved mental health care in a low-income, uninsured primary care clinic.

METHODS

We reviewed the charts of 500 consecutive patients in 1999 and 500 consecutive patients in 2004 to compare the number of mental health visits; the percentage of patients with more than three follow-up visits; the percentage with > or = 1 visit with a prescribing provider and the percentage with a psychiatric medication prescribed. We also assessed whether patients with more than one charted mental illness received more care than patients with one mental illness.

RESULTS

Compared to 1999, patients in 2004 had significantly more visits in the first 120 days (acute phase) of treatment (3.16 vs. 4.81, P<.001) and more visits in up to 9 months post acute phase (3.76 vs. 4.88, P>.012). A higher percentage of patients in the acute phase (28.9% vs. 49.5%, P<.001) had three follow-up visits, saw a medical provider and received a prescription. Patients with multiple charted mental illnesses had more visits than patients with one mental illness in 2004 but not in 1999 (P<.001).

CONCLUSIONS

An ongoing, multifaceted intervention improved the quality of mental health care in a primary care population with a high prevalence of mental illness.

Randomized trials with concurrent economic evaluations reported unrepresentatively large clinical effect sizes

OBJECTIVE

To examine whether randomized economic evaluations report clinical effectiveness estimates that are unrepresentative of the totality of the research literature.

STUDY DESIGN AND SETTING

From 36 studies (12,294 patients) of enhanced care for depression, we compared pooled clinical effect sizes in studies with a concurrent economic evaluation to those in studies that did not publish a concurrent economic evaluation, using metaregression.

RESULTS

The pooled clinical effect size of studies publishing an economic evaluation was almost twice as large as that of studies that did not publish an economic evaluation (pooled standardized mean difference [SMD] in randomized controlled trials [RCTs] with an economic evaluation=0.34; 95% confidence interval [CI]=0.23-0.46; pooled SMD in RCTs without an economic evaluation=0.17; 95% CI=0.10-0.25). This difference was statistically significant (SMD between group difference=-0.17; 95% CI: -0.31 to -0.02; P=0.02).

CONCLUSION

Publication of an economic evaluation of enhanced care for depression was associated with a larger clinical effect size. Cost-effectiveness estimates should be interpreted with caution, and the representativeness of the clinical data on which they are based should always be considered. Further research is needed to explore this observed association and potential bias in other areas.

Systematic review of multifaceted interventions to improve depression care

OBJECTIVE

Depression is a prevalent high-impact illness with poor outcomes in primary care settings. We performed a systematic review to determine to what extent multifaceted interventions improve depression outcomes in primary care and to define key elements, patients who are likely to benefit and resources required for these interventions.

METHOD

We searched Medline, HealthSTAR, CINAHL, PsycINFO and a specialized registry of depression trials from 1966 to February 2006; reviewed bibliographies of pertinent articles; and consulted experts. Searches were limited to the English language. We included 28 randomized controlled trials that: (a) involved primary care patients receiving acute-phase treatment; (b) tested a multicomponent intervention involving a patient-directed component; and (c) reported effects on depression severity. Pairs of investigators independently abstracted information regarding (a) setting and subjects, (b) components of the intervention and (c) outcomes.

RESULTS

Twenty of 28 interventions improved depression outcomes over 3-12 months (an 18.4% median absolute increase in patients with 50% improvement in symptoms; range, 8.3-46%). Sustained improvements at 24-57 months were demonstrated in three studies addressing acute-phase and continuation-phase treatments. All interventions involved care management and required additional resources or staff reassignment to implement; interventions were delivered exclusively or predominantly by telephone in 16 studies. The most commonly used intervention features were: patient education and self-management, monitoring of depressive symptoms and treatment adherence, decision support for medication management, a patient registry and mental health supervision of care managers. Other intervention features were highly variable.

CONCLUSION

There is strong evidence supporting the short-term benefits of care management for depression; critical elements for successful programs are emerging.

The association of depression and anxiety with medical symptom burden in patients with chronic medical illness

BACKGROUND

Primary care patients with anxiety and depression often describe multiple physical symptoms, but no systematic review has studied the effect of anxiety and depressive comorbidity in patients with chronic medical illnesses.

METHODS

MEDLINE databases were searched from 1966 through 2006 using the combined search terms diabetes, coronary artery disease (CAD), congestive heart failure (CHF), asthma, COPD, osteoarthritis (OA), rheumatoid arthritis (RA), with depression, anxiety and symptoms. Cross-sectional and longitudinal studies with >100 patients were included as were all randomized controlled trials that measure the impact of improving anxiety and depressive symptoms on medical symptom outcomes.

RESULTS

Thirty-one studies involving 16,922 patients met our inclusion criteria. Patients with chronic medical illness and comorbid depression or anxiety compared to those with chronic medical illness alone reported significantly higher numbers of medical symptoms when controlling for severity of medical disorder. Across the four categories of common medical disorders examined (diabetes, pulmonary disease, heart disease, arthritis), somatic symptoms were at least as strongly associated with depression and anxiety as were objective physiologic measures. Two treatment studies also showed that improvement in depression outcome was associated with decreased somatic symptoms without improvement in physiologic measures.

CONCLUSIONS

Accurate diagnosis of comorbid depressive and anxiety disorders in patients with chronic medical illness is essential in understanding the cause and in optimizing the management of somatic symptom burden.

Cost-effectiveness of collaborative care for chronically ill patients with comorbid depressive disorder in the general hospital setting, a randomised controlled trial

BACKGROUND

Depressive disorder is one of the most common disorders, and is highly prevalent in chronically ill patients. The presence of comorbid depression has a negative influence on quality of life, health care costs, self-care, morbidity, and mortality. Early diagnosis and well-organized treatment of depression has a positive influence on these aspects. Earlier research in the USA has reported good results with regard to the treatment of depression with a collaborative care approach and an antidepressant algorithm. In the UK 'Problem Solving Treatment' has proved to be feasible. However, in the general hospital setting this approach has not yet been evaluated.

METHODS/DESIGN

CC: DIM (Collaborative Care: Depression Initiative in the Medical setting) is a two-armed randomised controlled trial with randomisation at patient level. The aim of the trial is to evaluate the treatment of depressive disorder in general hospitals in the Netherlands based on a collaborative care framework, including contracting, 'Problem Solving Treatment', antidepressant algorithm, and manual-guided self-help. 126 outpatients with diabetes mellitus, chronic obstructive pulmonary disease, or cardiovascular diseases will be randomised to either the intervention group or the control group. Patients will be included if they have been diagnosed with moderate to severe depression, based on the DSM-IV criteria in a two-step screening method. The intervention group will receive treatment based on the collaborative care approach; the control group will receive 'care as usual'. Baseline and follow-up measurements (after 3, 6, 9, and 12 months) will be performed by means of questionnaires. The primary outcome measure is severity of depressive symptoms, as measured with the PHQ-9. The secondary outcome measure is the cost-effectiveness of these treatments according to the TiC-P, the EuroQol and the SF-36.

DISCUSSION

Earlier research has indicated that depressive disorder is a chronic, mostly recurrent illness, which tends to cluster with physical comorbidity. Even though the treatment of depressive disorder based on the guidelines for depression is proven effective, these guidelines are often insufficiently adhered to. Collaborative care and 'Problem Solving Treatment' will be specifically tailored to patients with depressive disorders and evaluated in a general hospital setting in the Netherlands.

Models of care for treating late-life depression in primary care

The aim of this review is to highlight the need for treating late-life depression in primary care settings, review obstacles to doing so and introduce evidence-based models of depression care for older primary care patients. While interventions focusing on depression screening, provider education and referral to mental health specialists have had only limited success, several recent trials have demonstrated that programs in which primary care providers and mental health professionals effectively collaborate to treat depression using evidence-based treatment algorithms are more effective than usual care. Future research should address the problem of persistent depression, which has been identified in recent collaborative care studies, and focus on how to translate evidence-based approaches for late-life depression treatment into real world practice.

Dissemination of evidence-based mental health interventions: importance to the trauma field

Randomized controlled trials have established the efficacy of psychotherapy and medication treatments for posttraumatic stress disorder (PTSD). Despite these advancements, many individuals do not receive guideline-concordant PTSD care. In an effort to advance dissemination of evidence-based PTSD treatments, the authors review several examples of dissemination efforts of mental health interventions. The first examples describe the dissemination of multifaceted collaborative care interventions for patients with depressive disorders and evidence-based interventions for patients with severe mental illness. The final example explores evolving efforts to adapt and disseminate interventions to acutely injured trauma survivors. For each example, the authors describe the problem with prior clinical approaches, the program to be disseminated, the barriers and levers to implementation and the progress in overcoming these barriers.

Improving depression care in patients with diabetes and multiple complications

BACKGROUND

Depression is common in patients with diabetes, but it is often inadequately treated within primary care. Competing clinical demands and treatment resistance may make it especially difficult to improve depressive symptoms in patients with diabetes who have multiple complications.

OBJECTIVE

To determine whether a collaborative care intervention for depression would be as effective in patients with diabetes who had 2 or more complications as in patients with diabetes who had fewer complications.

DESIGN

The Pathways Study was a randomized control trial comparing collaborative care case management for depression and usual primary care. This secondary analysis compared outcomes in patients with 2 or more complications to patients with fewer complications.

PATIENTS

Three hundred and twenty-nine patients with diabetes and comorbid depression were recruited through primary care clinics of a large prepaid health plan.

MEASUREMENTS

Depression was assessed at baseline, 3, 6, and 12 months with the 20-item depression scale from the Hopkins Symptom Checklist. Diabetes complications were determined from automated patient records.

RESULTS

The Pathways collaborative care intervention was significantly more successful at reducing depressive symptoms than usual primary care in patients with diabetes who had 2 or more complications. Patients with fewer than 2 complications experienced similar reductions in depressive symptoms in both intervention and usual care.

CONCLUSION

Patients with depression and diabetes who have multiple complications may benefit most from collaborative care for depression. These findings suggest that with appropriate intervention depression can be successfully treated in patients with diabetes who have the highest severity of medical problems.

Mood disorders: cardiovascular and diabetes comorbidity

PURPOSE OF REVIEW

Depression is often associated with medical comorbidity. New research quantifies patterns of mood disorder in illnesses such as cardiovascular disease and diabetes, evaluates the prognostic significance of mood symptoms, and seeks to identify common mechanisms for both mood and medical disease. This review provides recent findings on comorbidity, summarizes mechanistic hypotheses, and outlines developments in treatment and services.

RECENT FINDINGS

Depression occurs in up to one-quarter of patients with cardiovascular disease and diabetes. Depressed patients with heart disease have poorer medical outcomes including increased risk of reinfarction and all-cause mortality. Patients with diabetes and depression have poorer glycemic control, more diabetes symptoms, and greater all-cause mortality. Depression is associated with both biological (hypothalamic-pituitary-adrenal axis dysregulation) and psychosocial processes (adherence, poorer diet, and exercise) that may mediate adverse medical outcomes. Antidepressant treatments are effective in treating depression in medically ill patients, but their impact on medical outcomes remains to be quantified.

SUMMARY

Depression, cardiovascular disease, and diabetes are among the most common chronic illnesses affecting an aging population. Depression is treatable in patients with medical illnesses, and collaborative care models can yield better detection and depression treatment in primary care settings in which most patients with depression are seen.