Effects of Peer-Led Interventions for Patients With Cancer: A Meta-Analysis

What is the volume, diversity and nature of recent, robust evidence for the use of peer support in health and social care? An evidence and gap map

Background

Peer support interventions involve people drawing on shared personal experience to help one another improve their physical or mental health, or reduce social isolation. If effective, they may also lessen the demand on health and social care services, reducing costs. However, the design and delivery of peer support varies greatly, from the targeted problem or need, the setting and mode of delivery, to the number and content of sessions. Robust evidence is essential for policymakers commissioning peer support and practitioners delivering services in health care and community settings. This map draws together evidence on different types of peer support to support the design and delivery of interventions.

Objectives

The aim of this map was to provide an overview of the volume, diversity and nature of recent, high quality evidence on the effectiveness and cost-effectiveness of the use of peer support in health and social care.

Search Methods

We searched MEDLINE, seven further bibliographic databases, and Epistemonikos for systematic reviews (in October 2020), randomised controlled trials (in March 2021) and economic evaluations (in May 2021) on the effectiveness of peer support interventions in health and social care. We also conducted searches of Google Scholar, two trial registers, PROSPERO, and completed citation chasing on included studies.

Selection Criteria

Systematic reviews, randomised controlled trials and economic evaluations were included in the map. Included studies focused on adult populations with a defined health or social care need, were conducted in high-income countries, and published since 2015. Any measure of effectiveness was included, as was any form of peer support providing the peer had shared experience with the participant and a formalised role.

Data Collection and Analysis

Data were extracted on the type of peer support intervention and outcomes assessed in included studies. Standardised tools were used to assess study quality for all studies: assessing the methodological quality of systematic reviews 2 for systematic reviews; Cochrane risk of bias tool for randomised controlled trials; and consensus health economic criteria list for economic evaluations.

Main Results

We included 91 studies: 32 systematic reviews; 52 randomised controlled trials; and 7 economic evaluations. Whilst most included systematic reviews and economic evaluations were assessed to be of low or medium quality, the majority of randomised controlled trials were of higher quality. There were concentrations of evidence relating to different types of peer support, including education, psychological support, self-care/self-management and social support. Populations with long-term health conditions were most commonly studied. The majority of studies measured health-related indicators as outcomes; few studies assessed cost-effectiveness. Studies were unevenly distributed geographically, with most being conducted in the USA. Several gaps were evident regarding the delivery of peer support, particularly the integration of peers and professionals in delivering support and interventions of longer duration.

Authors' Conclusions

Although there is evidence available to inform the commissioning and delivery of peer support in health and social care, there are also clear gaps that need to be addressed to further support provision, particularly regarding cost-effectiveness. The effectiveness of peer support in different countries, with varying health and social care systems, is a priority for future research, as is the integration of peers with professionals in delivering peer support.

Peer support interventions on quality of life, depression, anxiety, and self-efficacy among patients with cancer: A systematic review and meta-analysis

OBJECTIVE

Peer support is a common form of social support that is provided by individuals with the same disease, which is cost-effective and has enhanced health outcomes for patients. This study aimed to determine the effectiveness of peer support interventions on quality of life (QOL), depression, anxiety, and self-efficacy among patients with cancer.

METHODS

A systematic search of seven databases were conducted from inception to January 2021. Studies were screened and assessed by two independent reviewers. Data synthesis was conducted using RevMan 5.3 software, and the standardized mean difference was used to calculate pooled effect sizes.

RESULTS

Seventeen studies were included in current review. The meta-analysis indicated significant beneficial effects of peer support on QOL (SMD = 0.48, 95% CI 0.21-0.75; p < 0.001), depression (SMD = -0.23, 95% CI -0.39 to -0.07; p = 0.005), anxiety (SMD = -0.24, 95% CI -0.45 to 0.03; p = 0.03), and self-efficacy (SMD = 0.22, 95% CI 0.03-0.42; p = 0.03) relative to controls. The subgroup analysis for QOL revealed that peer support delivered in the mixed mode contributed more than peer support delivered in the single mode (e.g., face-to-face or telephone).

CONCLUSION

Peer support has significant effects on improving QOL and self-efficacy as well as alleviating depression and anxiety among patients with cancer. Additional randomized controlled trials with rigorous design and larger sample sizes are warranted in the future.

PRACTICE IMPLICATIONS

Peer support programs might benefit patients with cancer and could be used as a complementary approach to traditional healthcare services during cancer rehabilitation.

Stakeholder engagement and participation in the design, delivery, and dissemination of the ostomy self-management telehealth (OSMT) program

PURPOSE

Stakeholder engagement is increasingly integrated into clinical research processes. We conducted a mixed methods analysis to describe stakeholders' (peer ostomates, ostomy nurses, telehealth engineers) perceptions of their engagement and participation in a multisite, randomized trial of a telehealth-delivered curriculum for cancer survivors with ostomies.

METHODS

Stakeholder notes were analyzed using narrative analysis. We constructed a 15-item survey that assessed the following areas: adherence to stakeholder engagement principles, engagement/influence throughout the study process, impact on perceived well-being, and satisfaction. Stakeholders were invited to complete the survey anonymously. Quantitative survey data were tabulated through summary statistics.

RESULTS

Across intervention sessions, an average of 7.7 ± 1.4 stakeholders attended and 2.6 ± 1.4 submitted a note per session. The survey response rate was 73% (11/15). Stakeholders reported high agreement that the study adhered to engagement principles (91% reciprocal relationships, 100% co-learning, partnership, and transparency/honesty/trust). They felt highly engaged (18% moderate, 73% great deal) and that they had influence on study initiation (27% moderate, 55% great deal), intervention delivery (9% moderate, 82% great deal), fidelity assessment (18% moderate, 73% great deal), analysis and interpretation (55% moderate, 27% great deal), and dissemination (45% moderate, 45% great deal). They reported high overall satisfaction with roles (91% great deal), believed the program was helpful for participants (91%), and that serving on study team benefited their own well-being (100%).

CONCLUSIONS

Our strategy of stakeholder inclusion led to high engagement, input, satisfaction, and belief in success of program, which could be mirrored in other trials.

Peer support for people with chronic conditions: a systematic review of reviews

Background

People with chronic conditions experience functional impairment, lower quality of life, and greater economic hardship and poverty. Social isolation and loneliness are common for people with chronic conditions, with multiple co-occurring chronic conditions predicting an increased risk of loneliness. Peer support is a socially driven intervention involving people with lived experience of a condition helping others to manage the same condition, potentially offering a sense of connectedness and purpose, and experiential knowledge to manage disease. However, it is unclear what outcomes are important to patients across the spectrum of chronic conditions, what works and for whom. The aims of this review were to (1) collate peer support intervention components, (2) collate the outcome domains used to evaluate peer support, (3) synthesise evidence of effectiveness, and (4) identify the mechanisms of effect, for people with chronic conditions.

Methods

A systematic review of reviews was conducted. Reviews were included if they reported on formal peer support between adults or children with one or more chronic condition. Data were analysed using narrative synthesis.

Results

The search identified 6222 unique publications. Thirty-one publications were eligible for inclusion. Components of peer support were organised into nine categories: social support, psychological support, practical support, empowerment, condition monitoring and treatment adherence, informational support, behavioural change, encouragement and motivation, and physical training. Fifty-five outcome domains were identified. Quality of life, and self-efficacy were the most measured outcome domains identified. Most reviews reported positive but non-significant effects.

Conclusions

The effectiveness of peer support is unclear and there are inconsistencies in how peers are defined, a lack of clarity in research design and intervention reporting, and widely variable outcome measurement. This review presents a range of components of peer support interventions that may be of interest to clinicians developing new support programmes. However, it is unclear precisely what components to use and with whom. Therefore, implementation of support in different clinical settings may benefit from participatory action research so that services may reflect local need.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12913-022-07816-7.

The potential role of peer support interventions in treating depressive symptoms in cancer patients

Depressive symptoms are prevalent in cancer patients and are one of the most distressing symptoms in this population. Although mental health professionals such as psychiatrists and psychologists are now engaged in cancer care, the management of depressive symptoms in cancer patients needs further improvement. Peer support interventions (PSIs) in cancer care have attracted substantial attention and have several advantages over support by medical professionals, potentially improving depressive symptoms in cancer patients. However, there may be some potential risks. Several strategies using PSIs have been developed to improve depressive symptoms and have been evaluated in randomized controlled trials. The strategies include education on stress management skills, promoting emotional support, counseling on specific topics that are difficult to discuss with others, helping patients navigate the use of resources, and promoting health-related behaviors to decrease depressive symptoms. In this paper, we present recent findings on PSIs in cancer, focusing on randomized controlled trials.

Women's Preferences for Body Image Programming: A Qualitative Study to Inform Future Programs Targeting Women Diagnosed With Breast Cancer

Purpose: This paper describes women's opinions of the attributes of the ideal body image program to inform the design, development, and implementation of future programs for those diagnosed with breast cancer. Methods: Deductive-inductive content analysis of semi-structured interviews with 26 women diagnosed with breast cancer (mean age = 55.96 years; mean time since diagnosis = 2.79 years) was performed. Findings: Participants' opinions regarding the ideal body image program are summarized into five themes, mapping the where (community-based, hospital-based, or online), when (across the cancer continuum or at specific points), how (peer-led programs, professional help, events, presentations/workshops, resources, support groups), what (self-care, counseling and education for one self, education for others, support for addressing sexuality/sexual health concerns, and concealing treatment-related changes), and who (team approach or delivered by women, health professionals, make-up artists). Conclusion: This study provides useful data on what women believe are the attributes of the ideal body image program, which can contribute to efforts aimed at developing and delivering body image programs for women diagnosed with breast cancer that prioritize their needs and preferences.

What is known from the existing literature about peer support interventions for carers of individuals living with dementia: A scoping review

This scoping review comprehensively describes evidence of using peer support to assist informal carers of individuals with dementia (any type). A systematic search of 11 databases (CINAHL, Cochrane Library, Medline, Embase, PsychInfo, Web of Science, Scopus, Science Direct, ProQuest, TRIP and PubMed) was conducted for research published between 2007-2017 focussing on informal dementia carers, and research designs with interventions incorporating or consisting exclusively of peer support. Authors worked independently to screen retrieved articles, review applicability and extract data. Thirty-six research papers (representing 28 original studies) were identified, from these, two modes of delivery were demonstrated: 12 studies provided the intervention online, and the remainder face-to-face. The review indicated that peer support is of potential benefit to carers if it is delivered via either mode. It is not clear what components may or may not be effective as results provided a mixed landscape of differing intervention effectiveness due to the wide variation in outcome measurements. Trial design using a multi-component intervention was the predominant choice, with the most common components being Information Sharing and Non-Healthcare Professional Support for both delivery modes. The burden/anxiety/depression compendium and health and well-being were the most frequently measured outcomes; perceived level of support was one of the least. The peer support interventions identified included various components, demonstrating no true best practice model. Nonetheless, they can be offered successfully online or face-to-face. This provides a unique opportunity to develop and supply tailored peer support interventions for informal dementia carers to ensure their specific needs are met. Further work is required to construct and evaluate the effectiveness of targeted peer-led support whether online or face-to-face to meet the individual needs of dementia carers.

Process Evaluation of a Nutrition and Lifestyle Behavior Peer Support Program for Adults with Metabolic Syndrome

Metabolic Syndrome (MetS) is a cluster of risk factors that increases the risk for diabetes and cardiovascular diseases. Lifestyle intervention is the gold standard of MetS management and prevention. Despite the growing positive influence of peer support-based interventions on management of various chronic diseases, its potential among adults with MetS has not been elucidated. We describe the development and process evaluation of a nutrition and lifestyle behavior “PEeR SUpport program for ADults with mEtabolic syndrome” (PERSUADE) using a systematic five-step approach—(i) review of evidence; (ii) focus group discussions; (iii) behavioral matrix development; (iv) module development; and (v) feasibility and process evaluation. High program adherence was recorded with 81.3% of participants attending all peer sessions. Participants’ content satisfaction score was high (93.3%) while peer leadership score was satisfactory (70.0%). There were significant reductions in all anthropometric and metabolic parameters assessed post intervention, except for diastolic blood pressure. Significant correlations were found between reductions in body fat and triglyceride, and content satisfaction. Peer leadership was only significantly correlated with reduction in triglyceride. Future studies can explore aspects of module interactivity, use of social media, and other means to stimulate consistent engagement of participants, as well as extending the implementations to other lifestyle-related diseases.

Social support for older adults with cancer: Young International Society of Geriatric Oncology review paper

Older adults with cancer have increasing needs in physical, cognitive, and emotional domains, and they can experience decline in all domains with the diagnosis and treatment of cancer. Social support plays a key role in supporting these patients, mitigating negative effects of diagnosis and treatment of cancer, and improving cancer outcomes. We review the importance of social support in older adults with cancer, describe the different components of social support and how they are measured, discuss current interventions that are available to improve social support in older adults, and describe burdens on caregivers. We also highlight Dr. Arti Hurria's contributions to recognizing the integral role of social support to caring for older adults with cancer.

Association of Self-Leadership and Planning With Performing an Exercise in Patients With Colorectal Cancer: Cross-Sectional Study

BACKGROUND

A healthy lifestyle that includes physical activity is an essential component of the care plans for cancer survivors. However, many cancer survivors remain inactive, even if they feel motivated to exercise. Based on the Chronic Care Model, self-leadership and planning may improve cancer survivors' self-management of their own care.

OBJECTIVE

The aim of this study was to examine whether self-leadership skills and planning are associated with performance and maintenance of an exercise program in patients with colorectal cancer.

METHODS

This cross-sectional study enrolled 251 consecutive patients with colorectal cancer who received primary curative surgery and were undergoing or had completed other therapy at the National University Hospitals from 2 regions in South Korea. Demographic data and measures of self-leadership and planning were obtained from questionnaires and clinical data from hospital databases. Self-leadership was measured using the validated Abbreviated Self-Leadership Questionnaire, and another validated psychometric assessment instrument was used to measure "action planning" and "coping planning."

RESULTS

Performing and maintaining an exercise program at a level recommended by an American Cancer Society panel correlated with greater self-leadership of behavior awareness and volition, task motivation, and constructive cognition. Greater action planning was associated with performing and maintaining this exercise program for more than 6 months.

CONCLUSIONS

The results of the current study indicate that having self-leadership and action planning are significantly associated with performing and maintaining an exercise program.

IMPLICATION FOR PRACTICE

We suggest that care providers try to increase self-leadership and action planning of patients with colorectal cancer to improve their self-management during long-term care.