The effectiveness of a minimal psychological intervention on self-management beliefs and behaviors in depressed chronically ill elderly persons: a randomized trial.

BACKGROUND: Chronically ill patients often develop symptoms of depression. They run the risk of sliding into a downward spiral because of the interaction between depression and chronic illness. A minimal psychological intervention (MPI) has been developed to break through the spiral by applying principles of self-management and cognitive behavioral therapy. This study examines the effects of the MPI on self-efficacy, anxiety, daily functioning and social participation. METHODS: A randomized controlled trial compared the MPI with usual care in 361 primary care patients. Nurses visited patients at home over a period of three months. Patients were aged 60 years and older, had minor depression or mild to moderate major depression and either type 2 diabetes mellitus (DM) or chronic obstructive pulmonary disease (COPD). Outcomes were measured at baseline and at one week, three months, and nine months after the intervention period. RESULTS: At nine months after treatment, the MPI was associated with less anxiety (mean difference 2.5; 95% CI 0.7-4.2) and better self efficacy skills (mean difference 1.8; 95% CI 3.4-0.2), daily functioning (mean difference 1.7; 95% CI 0.6-2.7), and social participation (mean difference 1.3; 95% CI 0.4-2.2). Effect sizes for these outcomes were small to medium (0.29-0.40). Differences were primarily due to a stabilization of outcomes in the intervention group and deterioration in the control group. No major differences were observed between DM and COPD patients. CONCLUSIONS: The intervention appears to be reasonably effective in improving care for chronically ill elderly people. We recommend further evaluation of the MPI, including emphasis on detection and watchful waiting.

Disparities by education level in outcomes of a self-management intervention: the DELTA trial in The Netherlands.

OBJECTIVE: The study examined whether education level was associated with benefits derived from a self-management intervention. Because such interventions increase one's sense of control, it was hypothesized that persons with less education, who generally have a diminished sense of control, would derive greater benefit. METHODS: A randomized trial was conducted with 361 patients aged 60 and older with type 2 diabetes or chronic obstructive pulmonary disease and mild to moderate depression. The intervention provided individualized contacts (two to ten) with nurses who taught participants to take control of their disease. RESULTS: Positive effects on depression, health-related quality of life, feelings of mastery, and self-efficacy were confined to patients with more education; those with only a primary education did not benefit. CONCLUSIONS: Only more highly educated patients profited from a cognitive-behavioral approach to self-management. Patients with chronic conditions who have less education may derive greater benefits if environmental adversities or lower cognitive abilities are taken into account.

Treating depression in diabetes patients: does a nurse-administered minimal psychological intervention affect diabetes-specific quality of life and glycaemic control? A randomized controlled trial.

AIMS: The aim of this study was to examine whether a nurse-administered minimal psychological intervention for depressive symptoms improves diabetes-specific quality of life and glycaemic control in older persons with diabetes. BACKGROUND: Depression is common among persons with diabetes and may have a negative impact on diabetes. Interventions aimed at reducing depressive symptoms may positively influence diabetes-specific quality of life as well. METHODS: A pragmatic, randomized controlled trial was carried out comparing the intervention with usual care among 208 Dutch primary care patients of ≥60 years with type 2 diabetes and co-occurring minor to moderate depression. Data on symptom distress and emotional distress were collected during 2003-2006, and haemoglobin A1c levels were obtained from general practices. Data were analysed using mixed model, repeated measures ANCOVAS. Hba1c was collected retrospectively from general practices between December 2006-February 2007. In July 2007 we retrieved some additional HbA1c data from the medical records of the university hospital. RESULTS: Only in higher-educated persons did the intervention have statistically significant effect on both emotional distress and symptom distress (DSC-R total score at 9 months P=0.001; PAID, 9 months P=0.03). Furthermore, we found an effect on symptom distress in men (9 months P=0.01), and on emotional distress in persons with a shorter diabetes duration (<7 years) (9 months P=0.04). A significant trend over time for haemoglobin A1c was found in favour of the intervention, with a statistically significant difference between groups after 9 months (P=0.02). CONCLUSION: The nurse-administered intervention had limited effects on diabetes-specific quality of life. As only certain subgroups benefited, ways of increasing effectiveness in other groups should be explored. The potentially beneficial effect on glycaemic control is encouraging and needs further research because of small numbers in the analysis.

Prescribing antidepressants and benzodiazepines in the Netherlands: is chronic physical illness involved?

In this study we assessed differences in new and repeat prescriptions of psycho-tropics between patients receiving prescriptions for drugs to treat a common chronic disease and people without such prescriptions. The study used the databases of two Dutch health insurance companies (3 million people). We selected all Dutch men and women aged 45 and older who were registered for six consecutive years (1999-2004). Our analyses both found a consistent relation between psycho-tropics on the one hand and physical illness on the other. People with multi-morbidity were prescribed these drugs most often, especially men and those younger than 65. Epidemiological studies showed a prevalence of depression among people with multi-morbidity to be twice as high as among people without such conditions. According to recent guidelines non-drug treatment may be the first therapy option for patients with non severe depression. If prescribed for a long time, benzodiazepine prescriptions are especially known to be addictive. Our data raise the question to what extent patients with a chronic physical disease suffering from co-occurring mental problems are prescribed psycho-tropics in accord with the guidelines that also advise mental support in case of non severe mental problems. Further research can answer this important question.

Improving quality of life in depressed COPD patients: effectiveness of a minimal psychological intervention.

Depression and anxiety are highly prevalent in elderly COPD patients. Since symptoms of depression and anxiety reduce quality of life in these patients, treatments aimed at improving mental health may improve their quality of life. This study evaluated the effectiveness of a nurse-led Minimal Psychological Intervention (MPI) in reducing depression and anxiety, and improving disease-specific quality of life in elderly COPD patients. In a randomized controlled trial an MPI was compared with usual care in COPD patients. COPD patients aged 60 years or over, and with minor or mild to moderate major depression were recruited in primary care (n = 187). The intervention was based on principles of cognitive behavioural therapy (CBT) and self-management. Outcomes were symptoms of depression, symptoms of anxiety, and disease-specific quality of life, assessed at baseline and at one week and three and nine months after the intervention. Results showed that patients receiving the MPI had significantly fewer depressive symptoms (mean BDI difference 2.92, p = 0.04) and fewer symptoms of anxiety (mean SCL difference 3.69, p = 0.003) at nine months than patients receiving usual care. Further, mean SGRQ scores were significantly more favourable in the intervention group than in the control group after nine months (mean SGRQ difference 7.94, p = 0.004). To conclude, our nurse-led MPI reduced symptoms of depression and anxiety and improved disease-specific quality of life in elderly COPD patients. The MPI appears to be a valuable addition to existing disease-management programmes for COPD patients.

A minimal psychological intervention in chronically ill elderly patients with depression: a randomized trial.

BACKGROUND: Among older persons with chronic somatic diseases, depression often remains unrecognized and untreated in primary care. The Depression in Elderly with Long-Term Afflictions (DELTA) study aimed to evaluate the effectiveness of a nurse-led minimal psychological intervention (MPI) in chronically ill elderly persons with depression. METHODS: A randomized controlled trial was conducted, comparing the MPI with usual care in 361 primary care patients. Four nurses had an average of 4 sessions with the intervention patients, each lasting 1 h, over a maximum period of 3 months. Patients were aged 60 years and older, had a minor depression or mild-to-moderate major depression, and either had type II diabetes or chronic obstructive pulmonary disease. RESULTS: Nine months after the intervention, patients receiving the MPI had significantly fewer depressive symptoms; the intervention patients were also more likely than usual-care controls to show a >or=50% reduction in depressive symptoms relative to baseline values. At 9 months, diabetic MPI patients had a better quality of life than diabetic controls. CONCLUSIONS: The nurse-led MPI appears to be a feasible and moderately effective method of managing minor-to-moderate depression in chronically ill elderly persons. However, we cannot rule out attention-placebo effects, and the disappointing finding of a recent economic evaluation showing only a 63% chance of the MPI being cost-effective. From a clinical point of view, however, it is of interest to further evaluate adaptations of the MPI, with a stronger emphasis on detection, watchful waiting and mental health problems in general.

Cost-utility estimates in depression: does the valuation method matter?

BACKGROUND: Depression imposes a substantial burden on society. In view of the economic burden of depression, studies evaluating depression treatment increasingly incorporate a cost-utility analysis. Outcomes of these analyses are used by decision makers to prioritize healthcare. Although generic preference-based instruments have been recommended for measuring utility, depression research often uses a disease-specific method, based on depression-free days (DFD), to measure utilities. AIMS OF THE STUDY: The objective of this study was to compare utility measurement techniques in the context of a randomized controlled trial. In particular, we studied the agreement between QALYs measured with the EuroQol (EQ-5D), the Short Form 6D (SF-6D), and the DFD method, using the EQ-5D as the reference method. We also studied whether the use of different techniques leads to different conclusions for decision makers. METHODS: Data were derived from the Depression in Elderly with Long-Term Afflictions (DELTA) study. This randomized controlled trial was designed to study the effectiveness and cost-effectiveness of a minimal psychological intervention for chronically ill patients with co-occurring minor or mild to moderate major depression. The EQ-5D, SF-6D and Beck Depression Inventory (to estimate DFDs) were assessed at baseline, and at three, six and twelve months after baseline. RESULTS: Poor agreement was found between the EQ-5D and DFD (Kendall's Tau: 0.33; ICC: 0.21 (95% CI:-0.07-0.45)) and moderate agreement between the EQ-5D and SF-6D (Kendall's Tau: 0.60; ICC: 0.47 (95% CI: 0.36-0.57)). The incremental cost-utility ratio led to similar conclusions for decision makers across techniques. DISCUSSION: In conclusion, utilities from the disease-specific DFD method should not be compared directly with utilities derived from the EQ-5D. Although a disease-specific method might yield similar cost-utility ratios as generic instruments, generic instruments remain the preferred option for prioritizing healthcare. Limitations of this study include the presence of minor depression and chronic illnesses in our study population. IMPLICATIONS: Generic instruments remain preferred for cost-utility analyses, especially when results are used to prioritize healthcare. If the DFD method is a way forward, further research is required to validate utility weights assigned to the DFDs.

Economic evaluation of a minimal psychological intervention in chronically ill elderly patients with minor or mild to moderate depression: a randomized trial (the DELTA-study).

OBJECTIVES: Depression is associated with high healthcare utilization and related costs. Effective treatments might reduce the economic burden. The objective of this study was to establish the cost-utility of a minimal psychological intervention (MPI) aimed at reducing depression and improving quality of life in elderly persons with diabetes or chronic obstructive pulmonary disease and co-occurring minor, mild, or moderate depression. METHODS: Trial-based cost-utility analysis was used to compare the MPI with usual care. Annual costs and quality-adjusted life-years (QALYs) based on the Euroqol (EQ5D) and on depression-free days were calculated. RESULTS: Annual costs and effects were not significantly different for the MPI group and care as usual. Bootstrap analysis indicated a dominant intervention, with a probability of 63 percent that the MPI is less costly and more effective than usual care. CONCLUSIONS: The cost-effectiveness analysis does not support dissemination of the MPI in its current form. The economic evaluation study showed limited probability that MPI is cost-effective over usual care. Further adjustments to the MPI are needed to make the intervention suitable for dissemination in regular care. TRIAL REGISTRATION: isrctn.org, identifier: ISRCTN92331982.

Summed score of the Patient Health Questionnaire-9 was a reliable and valid method for depression screening in chronically ill elderly patients.

OBJECTIVE: To assess the psychometric properties of the Patient Health Questionnaire-9 (PHQ-9) as a screening instrument for depression in elderly patients with diabetes mellitus (DM) and chronic obstructive pulmonary disease (COPD) without known depression. STUDY DESIGN AND SETTING: DM and COPD patients aged >59 years were selected from general practices. A test-retest was conducted in 105 patients. Criterion validity, using the Mini International Neuropsychiatric Interview psychiatric interview to diagnose major depressive disorder (MDD) and any depressive disorder (ADD) as diagnostic standard, was evaluated for both summed and algorithm-based PHQ-9 score in 713 patients. Correlations with quality of life and severity of illness were calculated to assess construct validity. RESULTS: Cohen's kappa for the algorithm-based score was 0.71 for MDD and 0.69 for ADD. Correlation for test-retest assessment of the summed score was 0.91. The algorithm-based score had low sensitivity and high specificity, but both sensitivity and specificity were high for the optimal cut-off point of 6 on the summed score for ADD (Se 95.6%, Sp 81.0%). Correlations between summed score and quality of life and severity of illness were acceptable. CONCLUSION: The summed PHQ-9 score seems a valid and reliable screening instrument for depression in elderly primary care patients with DM and COPD.