Long-term efficacy of indicated prevention of depression in non-professional caregivers: randomized controlled trial

Brief psychological intervention for suicide prevention based on problem-solving applied in different formats to people over 50 years old: protocol for a randomized controlled trial

BACKGROUND

Suicide is a major public health problem, especially among individuals over 50 years old. Despite the suitability of this life stage for prevention, research on the efficacy of psychological interventions is scarce and methodologically limited, affecting their clinical utility and efficacy. Brief, flexible interventions that can be applied both in-person and remotely are needed. This study aims to evaluate the efficacy of a brief problem-solving-based suicide prevention program applied through various modalities to individuals over 50 years old.

METHODS

A randomized controlled trial will be conducted. A sample of 212 adults aged 50 or older with suicidal ideation will be randomly assigned to a problem-solving-based psychological intervention administered face-to-face (PSPI-P; n = 53), by telephone multiconference (PSPI-M; n = 53), via a smartphone app (PSPI-A; n = 53), or to a usual care control group (UCCG; n = 53). The intervention will be delivered in 7 sessions or modules of 90 min each. Blind trained evaluators will conduct assessments at pre-intervention, post-intervention, and follow-ups at 3, 6, and 12 months. The primary outcome will be suicidal ideation evaluated using the Suicidal Ideation Scale (SSI) and the Columbia Suicide Severity Rating Scale (C-SSRS). Secondary outcomes will include hopelessness, anxiety and depression symptoms, reasons for living, impulsivity, problem-solving skills, social support, anger syndrome, gratitude, personality, dropouts, treatment adherence, and satisfaction with the intervention.

DISCUSSION

This study will provide evidence of the efficacy of a brief problem-solving-based intervention for suicide prevention in individuals over 50 years old, administered face-to-face, by telephone multiconference, and via a smartphone app. If results are favorable, it will indicate that an effective, accessible, clinically and socially useful suicide prevention intervention has been developed for affected individuals, families, and communities.

TRIAL REGISTRATION

ClinicalTrials.gov NCT06338904. Registered April 1, 2024.

What works to support carers of older people and older carers? an international evidence map of interventions and outcomes

BACKGROUND

Unpaid carers of older people, and older unpaid carers, experience a range of adverse outcomes. Supporting carers should therefore be a public health priority. Our understanding of what works to support carers could be enhanced if future evaluations prioritise under-researched interventions and outcomes. To support this, we aimed to: map evidence about interventions to support carers, and the outcomes evaluated; and identify key gaps in current evidence.

METHODS

Evidence gap map review methods were used. Searches were carried out in three bibliographic databases for quantitative evaluations of carer interventions published in OECD high-income countries between 2013 and 2023. Interventions were eligible if they supported older carers (50 + years) of any aged recipient, or any aged carers of older people (50 + years).

FINDINGS

205 studies reported across 208 publications were included in the evidence map. The majority evaluated the impact of therapeutic and educational interventions on carer burden and carers' mental health. Some studies reported evidence about physical exercise interventions and befriending and peer support for carers, but these considered a limited range of outcomes. Few studies evaluated interventions that focused on delivering financial information and advice, pain management, and physical skills training for carers. Evaluations rarely considered the impact of interventions on carers' physical health, quality of life, and social and financial wellbeing. Very few studies considered whether interventions delivered equitable outcomes.

CONCLUSION

Evidence on what works best to support carers is extensive but limited in scope. A disproportionate focus on mental health and burden outcomes neglects other important areas where carers may need support. Given the impact of caring on carers' physical health, financial and social wellbeing, future research could evaluate interventions that aim to support these outcomes. Appraisal of whether interventions deliver equitable outcomes across diverse carer populations is critical.

A pilot study for a smartphone app for the prevention of depression in non-professional caregivers

OBJECTIVES

The main objective of the current study was to evaluate the feasibility and acceptability of a cognitive-behavioral prevention intervention administered through a smartphone app in non-professional caregivers with symptoms of depression. The secondary objective was to make a preliminary evaluation of its effectiveness either alone or supplemented with telephone conference calls.

METHODS

Eighty-seven participants (M_age = 51.8 years) were randomly assigned to an app-based cognitive-behavioral intervention (CBIA; n = 29), CBIA supplemented with telephone conference calls (CBIA + CC; n = 28), or an attention control group (ACG; n = 30). The participants for both interventions received five cognitive-behavioral modules through the app, and those in CBIA + CC an additional 30-minute phone call in each module.

RESULTS

3.4% of caregivers dropped out. In all groups, the number of modules completed was high. Participants completed a high percentage of the homework and were highly satisfied with both CBIA and CBIA + CC. At post-intervention, there was a lower incidence of depression and depressive symptoms for CBIA + CC compared with CBIA, and for CBIA and CBIA + CC compared with ACG.

CONCLUSION

The results supported the feasibility and acceptability of the cognitive-behavioral intervention, and demonstrated that telephone contact improves its effectiveness.

Psychological interventions for symptoms of depression among informal caregivers of older adult populations: A systematic review and meta-analysis of randomized controlled trials

BACKGROUND

Symptoms of depression are commonly experienced by informal caregivers of older adults, however there is uncertainty concerning effectiveness of psychological interventions targeting symptoms of depression in this population. Further, there is uncertainty concerning important clinical moderators, including intervention type and care recipient health condition. This review examined the effectiveness of psychological interventions targeting symptoms of depression in informal caregivers of older adults.

METHODS

PubMed, CINAHL, Embase, PsycINFO, Cochrane Library and Web of Science were searched. Risk of bias was assessed using the Cochrane Risk of Bias tool version 2.

RESULTS

Fifteen studies were identified and twelve (1270 participants) provided data for the meta-analysis. Interventions included cognitive behavioral therapy (4 studies), problem-solving therapy (4 studies); non-directive supportive therapy (4 studies) and behavioral activation (3 studies). A small effect size favouring the intervention was found for symptoms of depression (g = -0.49, CI = -0.79, -0.19, I² = 83.42 %) and interventions were effective in reducing incidence of major depression (OR = 0.177, CI = 0.08, 0.38), caregiver burden (g = -0.35, CI = -0.55, -0.15) and psychological distress (g = -0.49, CI = -0.70, -0.28). Given high heterogeneity, findings should be interpreted with caution. Overall risk of bias was high.

LIMITATIONS

Studies were limited to those in English or Swedish.

CONCLUSION

Psychological interventions may be effective in reducing symptoms of depression among informal caregivers of older adults. However, evidence is inconclusive due to heterogeneity, high risk of bias, and indirectness of evidence.

Educational interventions by nurses in caregivers with their elderly patients at home

INTRODUCTION

The home is the natural setting for the development of informal care. The work that nurses are required to develop in this context (the carer/the elderly dependent/the home) focuses on training and educational activities to assist these two groups, such as demonstrating care activities to help dependent seniors, instruction in self-care techniques and teaching strategies for the use of human and material resources.

AIMS

This article analyzes care education interventions performed by nurses, and the factors that facilitate, or limit, health care training.

METHODOLOGICAL APPROACH

This is a qualitative, descriptive study designed to be flexible and openly analytical in its approach to the research problem and the dynamic nature of the home environment. Triangulation of the methodological techniques and study subjects was applied.

RESULTS

Nursing interventions related to professional attitudes, such as encouraging communication and facilitating teaching; communication interventions in health education and counseling; and technical interventions aimed at improving access to health information and support for the informal carer. Lack of will, the advanced age of the carer, emotional state and work overload are factors that undermine care instruction, which if reversed, would become learning facilitators. The lack of time and resources in the home are the major limiting factors on care teaching, according to nurses. Evidence from our study suggests that care in the home is considered a key primary health care strategy, one in which nurses play a significant role.

Long-Term Effects of a Cognitive Behavioral Conference Call Intervention on Depression in Non-Professional Caregivers

Recent evidence supports the efficacy of conference call cognitive-behavioral interventions in preventing depression in caregivers at post-intervention, but we do not know whether the results are sustained long term. The main objective of this study was to evaluate the long-term efficacy of a cognitive-behavioral intervention administered by telephone conference call in preventing depression in caregivers with elevated depressive symptoms, comparing all components of the intervention versus only the behavioral ones. A randomized controlled trial was conducted using a dismantling strategy. At total of 219 caregivers were randomly assigned to a cognitive-behavioral conference call intervention (CBCC; n = 69), a behavioral-activation conference call intervention (BACC; n = 70), or a usual care control group (CG, n = 80). Information was collected on depressive symptoms and depression at pre-intervention and at 1, 3, 6, 12, and 36 months post-intervention. At 36 months, there was a reduction in depressive symptoms (p < 0.001) and a lower incidence of major depressive episodes in both the CBCC and BACC groups compared to CG (8.7%, 8.6%, and 33.7%, respectively). The results show that a conference call intervention was effective in the long term to prevent depression in caregivers and that the behavioral-activation component was comparable to the complete cognitive-behavioral protocol.

Brief Psychological Intervention Through Mobile App and Conference Calls for the Prevention of Depression in Non-Professional Caregivers: A Pilot Study

Despite its potential, no intervention aimed at non-professional caregivers administered through a smartphone app has been proven to prevent depression. The objective of this pilot study was to evaluate the efficacy and feasibility of an indicated depression-prevention intervention for non-professional caregivers administered through an app with the addition of conference-call contact. The intervention was administered to 31 caregivers (Mean age = 54.0 years, 93.5% women). An independent evaluation determined the incidence of depression, depressive symptoms, risk of developing depression, and the variables in the theoretical model (positive environmental reinforcement, negative automatic thoughts) at the pre-intervention and post-intervention, as well as the one- and three-month follow-ups. The incidence of depression at 3 months of follow-up was 6.5%. There was a significant reduction in depressive symptoms (p < 0.001) and in the risk of developing depression (p < 0.001) at the post-intervention and at the one- and three-month follow-ups. The model’s variables improved significantly after the intervention and were associated with post-intervention depressive symptoms. The intervention was more effective in caregivers who had a lower level of depressive symptoms at the pre-intervention. Adherence and satisfaction with the intervention were high. The results encourage future research using a randomized controlled clinical trial.

Problem-solving intervention to prevent depression in non-professional caregivers: a randomized controlled trial with 8 years of follow-up

BACKGROUND

Studies of psychological interventions for the prevention of depression have found significant effects in the short-term, but the long-term efficacy has yet to be determined. This study evaluated the 8-year effect of a randomized controlled trial for indicated prevention of depression in female caregivers.

METHODS

A total of 173 non-professional female caregivers with subclinical depressive symptoms not meeting criteria for a major depressive episode (MDE) were randomized to either a brief problem-solving intervention (n = 89) or usual-care control group (n = 84). Blinded evaluators conducted an assessment at the 8-year follow-up. The primary outcome was Depression Status, defined by diagnoses of MDE since the 1-year follow-up using the Structured Clinical Interview for the Disorders of the DSM-5. The secondary outcome was current Depressive Symptom Severity. Regression analyses were conducted to evaluate the effect of the intervention on the outcomes.

RESULTS

There were no significant differences in the Depression Status between the problem-solving (30.3%) and control groups (26.2%) (adjusted OR 1.25, 95% CI -0.58 to 2.69). Depressive Symptom Severity, however, was significantly lower in the problem-solving group compared to the control group at this follow-up, amounting to a small effect size of Cohen's d = 0.39 (adjusted B = -3.32, p = 0.018).

CONCLUSIONS

This is the first study to assess such a long-term follow-up of intervention of indicated prevention of depression. Results seem to indicate that the protective effect of the intervention became smaller over time during follow-up. Future research should replicate these results.

Efficacy of a problem-solving intervention for the indicated prevention of suicidal risk in young Brazilians: Randomized controlled trial

OBJECTIVE

The aim of this study was to evaluate the efficacy of a problem-solving intervention for the prevention of suicidal risk in Brazilian adolescents with elevated suicidal potential and depressive symptoms.

METHODS

A randomized controlled trial was conducted involving 100 participants (mean age 17.2 years, 60% women, 46% mixed race), allocated to the problem-solving intervention (n = 50) or the usual care control group (n = 50). Blinded interviewers conducted assessments at pretreatment, posttreatment, 1, 3, and 6 months of follow-up. The main outcome was suicidal orientation; secondary outcomes were suicidal risk, suicidal plans and attempts, depressive symptoms, and problem-solving skills.

RESULTS

At posttreatment and up to 6-month follow-up, there was lower suicidal orientation and suicidal risk in the problem-solving group compared to the control group. There were lower suicidal plans and attempts (0.0% participants vs 2.2% with a suicide plan and 2.2% with both suicide plan and attempt); risk difference was 0.04 (95% CI: 0.01-0.09) and the number needed to treat was 25 (95% CI: 11-70). Significant effects of the intervention on depressive symptoms were found at posttreatment and maintained for 6 months. The change in global and functional problem-solving skills mediated the reduction in suicide orientation.

CONCLUSIONS

Thus, suicidal risk can be successfully prevented in adolescents.

Does the Disease of the Person Receiving Care Affect the Emotional State of Non-professional Caregivers?

Research on mental health of non-professional caregivers has focused on caregivers of people with specific diseases, especially dementia. Less is known about caregivers of people with other diseases. The aims of this study were (a) to determine the caregivers’ emotional state in a random sample of caregivers of people in situations of dependency, (b) to analyze the association between each disease of the care-recipient (a variety of 23 diseases included in the International Classification of Diseases) and the emotional state of the caregiver, and (c) based on the theoretical model, to analyze the relationship of the different study variables in the appearance of the emotional distress of the caregiver. A sample of 491 non-professional caregivers was selected randomly (89.0% women, average age 55.3 years). Trained psychologists collected sociodemographic and care-related characteristics and evaluated the global emotional distress, somatic symptoms, anxiety-insomnia, social dysfunction, depression, probable mental disorder case, self-esteem, and social support. It was found that (a) the caregivers showed moderate emotional distress, and 33.8% presented a probable mental disorder. (b) Caring for a care-recipient with cat’s cry syndrome or epilepsy was related to suffering from social dysfunction, and caring for a care-recipient with autism was related to having a probable mental health case. (c) Social support mediated the relationship between social class, daily hours of care, monthly family income, self-esteem and global emotional distress. There is an important impact on the emotional state of the caregivers. This impact was similar in caregivers of care-recipients with different diseases, except in caregivers caring for a care-recipient with cat’s cry syndrome or epilepsy (related to social dysfunction), and in caregivers caring for a care-recipient with autism (related to having a probable mental health case).

Psychometric Properties of the Spanish Version of the Caregiver Burden Inventory

Although the Caregiver Burden Inventory (CBI) is the most widely used multidimensional burden instrument for assessing perceived burden of caregivers, there is no data on its psychometric properties in Spanish, nor on caregivers of dependent persons with various diseases. The objective of this study was to translate the CBI into Spanish and validate it in caregivers of dependent persons with various diseases. Trained evaluators administered the CBI and assessed emotional distress and probable mental disorder in 201 caregivers (87.1% women, mean age 56.2 years). The internal consistency of the CBI was 0.89 (0.74–0.83 among the subscales). There was a significant correlation of emotional distress with both the total burden and each subscale (p < 0.001 in all cases). A total score of 39 and scores of 16, 9, 8, 4, and 2 in burden per time dedicated to care, personal life burden, physical burden, social burden, and emotional burden were suitable cut-off points to discriminate caregivers with probable mental disorder (sensitivity = 63.0%–75.6%, specificity = 63.4%–74.4%). To achieve a greater goodness of fit, the model was re-specified, resulting in a shortened (15-item) instrument. The internal consistency reliability coefficients of the 15-item CBI were satisfactory (Cronbach α = 0.83; 0.77–0.86 among the subscales). Within the 15-item CBI, emotional distress was significantly correlated with the total burden, personal life burden, physical burden, social burden (p < 0.001 in all those cases), and emotional burden (p = 0.001). A total score of 25 and scores of 12, 5, 5, 3, and 1, respectively, in the subscales were identified as cut-off points to discriminate caregivers with probable mental disorder (sensitivity = 46.2%–70.6%, specificity = 43.9%–79.3%). Therefore, the 15-item CBI validly measured caregiver burden with better fit and more parsimoniously than the original CBI.

Estimation of a Relative Risk Effect Size when Using Continuous Outcomes Data: An Application of Methods in the Prevention of Major Depression and Eating Disorders

INTRODUCTION

The raw mean difference (RMD) and standardized mean difference (SMD) are continuous effect size measures that are not readily usable in decision-analytic models of health care interventions. This study compared the predictive performance of 3 methods by which continuous outcomes data collected using psychiatric rating scales can be used to calculate a relative risk (RR) effect size.

METHODS

Three methods to calculate RR effect sizes from continuous outcomes data are described: the RMD, SMD, and Cochrane conversion methods. Each conversion method was validated using data from randomized controlled trials (RCTs) examining the efficacy of interventions for the prevention of depression in youth (aged ≤17 years) and adults (aged ≥18 years) and the prevention of eating disorders in young women (aged ≤21 years). Validation analyses compared predicted RR effect sizes to actual RR effect sizes using scatterplots, correlation coefficients ( r), and simple linear regression. An applied analysis was also conducted to examine the impact of using each conversion method in a cost-effectiveness model.

RESULTS

The predictive performances of the RMD and Cochrane conversion methods were strong relative to the SMD conversion method when analyzing RCTs involving depression in adults (RMD: r = 0.89-0.90; Cochrane: r = 0.73; SMD: r = 0.41-0.67) and eating disorders in young women (RMD: r = 0.89; Cochrane: r = 0.96). Moderate predictive performances were observed across the 3 methods when analyzing RCTs involving depression in youth (RMD: r = 0.50; Cochrane: r = 0.47; SMD: r = 0.46-0.46). Negligible differences were observed between the 3 methods when applied to a cost-effectiveness model.

CONCLUSION

The RMD and Cochrane conversion methods are both valid methods for predicting RR effect sizes from continuous outcomes data. However, further validation and refinement are required before being applied more broadly.

Cognitive behavioral intervention via a smartphone app for non-professional caregivers with depressive symptoms: study protocol for a randomized controlled trial

Background

Although major depression is a frequent disorder in non-professional caregivers and there are effective psychological interventions to prevent it, caregivers have difficulty accessing them. Interventions for depression applied through an app could improve accessibility; yet, to date, adherence to such interventions has been low. The objectives of this study are to (1) evaluate the efficacy of a cognitive behavioral depression prevention intervention administered through a smartphone app with and without telephone conference calls, (2) analyze the mediators of the change in the incidence of depression and depressive symptoms, and (3) assess adherence and satisfaction with the interventions.

Methods

A randomized controlled clinical trial will be conducted. Caregivers with elevated symptoms will be randomly assigned to a cognitive behavioral intervention administered by a smartphone app (CBIA) group, a CBIA plus telephone conference calls (TCCs) group (CBIA + TCC), or an attention control group. Each condition will consist of approximately 58 participants. Both interventions will be administered in five modules through a smartphone app and the CBIA + TCC group will receive additional TCCs in group format (four sessions of 30 min each). Trained blind assessors will conduct pre-treatment, post-treatment and follow-up assessments at 1, 3, 6, and 12 months.

Discussion

This study will provide evidence of the efficacy of a cognitive behavioral intervention to prevent depression in caregivers with elevated depressive symptoms administered through a smartphone app and the impact of feedback applied through conference calls to increase program adherence and efficacy. If the results were favorable, it would mean that we have developed a more effective, accessible, and clinically useful preventive depression intervention than the currently available ones for many present and future caregivers.

Trial registration

ClinicalTrials.gov: NCT03110991. Registered 5 April 2017.

Electronic supplementary material

The online version of this article (10.1186/s13063-018-2793-2) contains supplementary material, which is available to authorized users.

Analysis of the components of a cognitive-behavioral intervention administered via conference call for preventing depression among non-professional caregivers: a pilot study

OBJECTIVES

The primary aim was to assess the feasibility/acceptability of a preventive cognitive-behavioral intervention implemented via conference call for caregivers. The secondary aim was to conduct a preliminary assessment of the efficacy of the behavioral activation component alone compared to the complete cognitive-behavioral intervention.

METHOD

Sixty-one caregivers (mean age 58.4 years) were randomly assigned to a cognitive-behavioral intervention via conference call (CBC, n = 20), a behavioral activation intervention via conference call (BAC, n = 22) or a control group receiving usual care (CG, n = 19). Both interventions consisted of five 90-minute group sessions implemented weekly.

RESULTS

Only 6.6% of caregivers discontinued the study. In the CBC and BAC groups, attendance and satisfaction with the intervention were similarly high among both groups. Homework adherence was also high in both groups. At post-treatment, there was a lower incidence of depression in the CBC and BAC groups compared to the CG (0.0% for BAC and CBC vs. 10.5% for CG). The relative risk was 0.0, and number needed to treat was 10 in both groups. Depressive symptoms were significantly reduced in the CBC and BAC groups compared to the CG (d = 2.18 and d = 2.06).

CONCLUSION

The results support the feasibility of the intervention. Moreover, the BAC intervention was non-inferior to the CBC intervention for reducing depressive symptoms.

Long-term Follow-up of a Randomized Clinical Trial Assessing the Efficacy of a Brief Cognitive-Behavioral Depression Prevention Intervention for Caregivers with Elevated Depressive Symptoms

OBJECTIVES

To evaluate the efficacy of a cognitive-behavioral intervention for the prevention of depression in caregivers with elevated depressive symptoms through 12 months of follow-up.

DESIGN

Randomized controlled trial.

SETTING

Community in Galicia (Spain).

PARTICIPANTS

170 caregivers with elevated depressive symptoms.

INTERVENTIONS

Caregivers were randomized to a cognitive-behavioral intervention (N = 88), administered to groups of five participants in five weekly 90-min sessions, or to a usual care control group (N = 82).

MEASUREMENTS

Major depressive episodes (according to the Structured Clinical Interview for Axis I Disorders of the DSM-IV), depressive symptoms, emotional distress, caregiver burden, pleasant activities, depressive thoughts, social contacts. Trained blinded interviewers conducted assessments at 1, 3, 6, and 12 months of follow-up.

RESULTS

At the 12-month follow-up, there was a lower incidence of major depressive episodes in the intervention group compared with the control group (3.4% versus 22.0%). The relative risk was 0.15 (95% CI: 0.05-0.51) and the number needed to treat was 5 (95% CI: 3-11). The time of delay of the depressive episode onset in the intervention group was significant. Caregivers with good compliance to the intervention had a lower incidence of depression. The effects of the intervention on depressive symptoms, emotional distress, and caregiver burden were maintained for 12 months. Younger caregivers were more likely to benefit from the intervention. The change in depressive thoughts mediated the reduction in depressive symptoms.

CONCLUSIONS

Depressive episodes can be successfully prevented in caregivers, with long-term effects.

Differential response to depression prevention among a sample of informal caregivers: Moderator analysis of longer-term follow-up trial data

Depression is one of the most common mental disorders in caregivers. Therefore, preventive interventions for this population are needed, especially for caregivers with subclinical symptoms of depression. However, no study to date has identified the characteristics of caregivers that help to predict who will or will not benefit from such a preventive intervention. This study aimed to identify moderators of response to intervention comparing problem solving and usual care in indicated prevention of depression among informal caregivers. A randomized controlled trial was conducted involving 173 participants who were allocated to the problem-solving intervention (n=89) or the usual-care control-group (n=84), with 12-months follow-up. Socio-demographic, care-related and clinical variables at baseline were analyzed as potential moderators of intervention response at 12-months follow-up. Age and emotional distress emerged as significant moderators. Those caregivers younger than 65 years and with higher emotional distress at baseline were more likely to benefit from the intervention than from usual care. Simultaneous consideration of multiple moderators found that intervention was indicated for 95.4% of the sample. Considering these moderators in clinical decision-making could contribute to matching treatments and health service users in a more personalized and effective way.

Protocol for a randomized controlled dismantling study of a brief telephonic psychological intervention applied to non-professional caregivers with symptoms of depression

BACKGROUND

Although depression is a common problem in caregivers and there are effective cognitive-behavioral interventions for its prevention, the ability of caregivers to attend these treatments is often limited by logistics. Furthermore, the efficacy of the components of these interventions is unknown. The objectives of this study are to (a) evaluate the efficacy of a telephone-administered cognitive-behavioral intervention to prevent depression with all its components (cognitive and behavioral) and only with behavioral activation, and to (b) analyze the mediators of the change in depressive symptoms.

METHODS/DESIGN

A randomized controlled clinical trial was designed to dismantle the components of a cognitive-behavioral intervention. Caregivers with elevated depressive symptoms will be randomly assigned to a cognitive-behavioral intervention, an intervention with only the behavioral activation component, or a usual care control group. Each condition will consist of approximately 60 participants. The two interventions will consist of five sessions lasting 90 min each, applied to groups of about 5 participants at a time via conference call. Trained interviewers, blind to the experimental conditions, will conduct the assessments at the pre-treatment, post-treatment and 1-, 3-, 6- and 12-month follow-ups.

DISCUSSION

This study will provide evidence of the efficacy of a cognitive-behavioral intervention to prevent depression in caregivers with elevated depressive symptoms administered via conference call, and on the impact of the behavioral activation component on the overall efficacy of the program. If we find favorable results, it would mean that we have developed a program of prevention of depression of higher clinical utility and efficacy than those currently available, which would make it possible for a large number of caregivers to have access to such resources.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT02292394. Registered 6 November 2014.