Personalizing behavioral interventions: the case of late-life depression

Personalising psychotherapies for depression using a novel mixed methods approach: an example from Morita therapy

Background

Current quantitative methods for personalising psychotherapies for depression are unlikely to be able to inform clinical decision-making for hundreds of years. Novel alternative methods to generate hypotheses for prospective testing are therefore required, and we showcase mixed methods as one such approach. By exploring patients’ perspectives in depth, and integrating qualitative and quantitative data at the level of the individual, we may identify new potential psychosocial predictors of psychotherapy outcomes, potentially informing the personalisation of depression treatment in a shorter timeframe. Using Morita therapy (a Japanese psychotherapy) as an exemplar, we thus explored how Morita therapy recipients’ views on treatment acceptability explain their adherence and response to treatment.

Methods

The Morita trial incorporated a pilot randomised controlled trial of Morita therapy versus treatment as usual for depression, and post-treatment qualitative interviews. We recruited trial participants from general practice record searches in Devon, UK, and purposively sampled data from 16 participants for our mixed methods analysis. We developed typologies of participants’ views from our qualitative themes, and integrated these with quantitative data on number of sessions attended and whether participants responded to treatment in a joint typologies and statistics display. We enriched our analysis using participant vignettes to demonstrate each typology.

Results

We demonstrated that (1) participants who could identify with the principles of Morita therapy typically responded to treatment, regardless of how many sessions they attended, whilst those whose orientation towards treatment was incompatible with Morita therapy did not respond to treatment, again regardless of treatment adherence and (2) participants whose personal circumstances impeded their opportunity to engage in Morita therapy attended the fewest sessions, though still benefitted from treatment if the principles resonated with them.

Conclusions

We identified new potential relationships between “orientation” and outcomes, and “opportunity” and adherence, which could not have been identified using existing non-integrative methods. This mixed methods approach warrants replication in future trials and with other psychotherapies to generate hypotheses, based on typologies (or profiles) of patients for whom a treatment is more or less likely to be suitable, to be tested in prospective trials.

Trial registration

Current Controlled Trials, ISRCTN17544090. Registered on 23 July 2015.

Types of Utilization and Types of Treatment Response in a Collaborative Care Approach for Depressive Disorders in Old Age in Primary Care

Background: Treatment of depressive disorders in old age is hindered by several barriers. Most common are time pressure in primary care and latency for specialized therapeutic care. To improve treatment, the collaborative care approach GermanIMPACT was evaluated in a cluster-randomized controlled trial. Care managers offered a complex stepped-care intervention of monitoring, psychoeducation, and behavioral activation techniques. Twenty-six percent of the intervention group responds with a remission of depressive symptoms compared with 11% who received treatment as usual (TAU). The low-threshold intervention was more successful than TAU. Nevertheless, three-quarters did not respond with a remission. The aim of this study is to identify and describe the different types of utilization and of treatment response to understand what constitutes an effective intervention. Methods: Of 64 patients from the intervention group, we carried out problem-centered interviews with 26 patients from the intervention group. We analyzed the interviews using a qualitative type-building content analysis. For type construction, we performed a contrasting case comparison, regarding inductive and deductive categories of the intervention utilization and the symptom development. Results: The 26 participants' ages ranged from 62 to 87 years (mean = 72 years). Three participants were male. We identified five types of utilization, which differ primarily in the realization of pleasant activations, depending on own activity at the beginning and during the therapy: "activatable relief seekers," "active relief seekers," "active relaxation seekers," "passive problem-solving seekers," and "passive relief seekers." In the second typology, we analyzed four deductively determined types of treatment response responders, slight improvers, constant moderates, and non-responders. Patient-specific characteristics are a recent history of depression, an affinity for activities, supportive contacts, and limited comorbidity. In contrast, non-responders report contrary characteristics. Conclusion: Our two typologies emphasize that an effective intervention requires a match between intervention components and patient characteristics. We saw no intersections between utilization and treatment response. GermanIMPACT is an effective low-threshold intervention for moderately burdened patients, who are still capable of self-activation. An expansion of the intervention, especially for depression with a long history and comorbidities impairing mobility, could increase the effectiveness and improve the care situation of older people suffering from depression.

Psychosocial Treatment Options for Major Depressive Disorder in Older Adults

Late-life depression (LLD) is a public health concern with deleterious effects on overall health, cognition, quality of life, and mortality. Although LLD is relatively common, it is not a normal part of aging and is often under-recognized in older adults. However, psychotherapy is an effective treatment for LLD that aligns with many patients' preferences and can improve health and functioning. This review synthesized the current literature on evidence-based psychotherapies for the treatment of depression in older adults. Findings suggest that active, skills-based psychotherapies (cognitive behavioral therapy [CBT] and problem-solving therapy [PST]) may be more effective for LLD than non-directive, supportive counseling. PST may be particularly relevant for offsetting skill deficit associated with LLD, such as in instances of cognitive impairment (especially executive dysfunction) and disability. Emerging treatments also consider contextual factors to improve treatment delivery, such as personalized care, access, and poverty. Tele-mental health represents one such exciting new way of improving access and uptake of treatment by older adults. Although these strategies hold promise, further investigation via randomized controlled trials and comparative effectiveness are necessary to advance our treatment of LLD. Priority should be given to recruiting and training the geriatric mental health workforce to deliver evidence-based psychosocial interventions for LLD.

Choosing treatment for depression in older adults and evaluating response

An update is provided on the current information regarding late life depression with regard to assessment, clinical implications, and treatment recommendations. Several treatments are considered evidence-based, but when deployed into field trials, the efficacy of these treatments falls short. It is thought that the lower impact in community trials is due in large part to patient, clinical, environmental, socio-economic, and cognitive correlates that influence treatment response. The aim is to assist providers in making decisions about what type of treatment to recommend based on a sound assessment of these clinical correlates.

Should treatment for depression be based more on patient preference?

Patient treatment preferences are of growing interest to researchers, clinicians, and patients. In this review, an overview of the most commonly recommended treatments for depression is provided, along with a brief review of the evidence supporting their efficacy. Studies examining the effect of patient treatment preferences on treatment course and outcome are summarized. Existing literature on what treatment options patients tend to prefer and believe to be helpful, and what factors may affect these preferences, is also reviewed. Finally, clinical implications of research findings on patient preferences for depression management are discussed. In summary, although our knowledge of the impact of patient preferences on treatment course and outcome is limited, knowing and considering those preferences may be clinically important and worthy of greater study for evidence-based practice.