The relative effectiveness of self-management programs for type 2 diabetes

Effectiveness of Therapeutic Patient Education Interventions in Obesity and Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Diabetes mellitus (DM) and obesity account for the highest burden of non-communicable diseases. There is increasing evidence showing therapeutic patient education (TPE) as a clinically and cost-effective solution to improve biomedical and psychosocial outcomes among people with DM and obesity. The present systematic review and meta-analysis present a critical synthesis of the development of TPE interventions for DM and obesity and the efficacy of these interventions across a range of biomedical, psychosocial and psychological outcomes. A total of 54 of these RCTs were identified among patients with obesity and diabetes and were thus qualitatively synthesized. Out of these, 47 were included in the quantitative synthesis. There was substantial heterogeneity in the reporting of these outcomes (I2 = 88.35%, Q = 317.64), with a significant improvement noted in serum HbA1c levels (standardized mean difference (SMD) = 0.272, 95% CI: 0.118 to 0.525, n = 7360) and body weight (SMD = 0.526, 95% CI: 0.205 to 0.846, n = 1082) in the intervention group. The effect sizes were comparable across interventions delivered by different modes and delivery agents. These interventions can be delivered by allied health staff, doctors or electronically as self-help programs, with similar effectiveness (p < 0.001). These interventions should be implemented in healthcare and community settings to improve the health outcomes in patients suffering from obesity and DM.

Multimodal Diabetes Empowerment for Older Adults with Diabetes

Systematically improving empowerment is not easy when operating a diabetes program for older adults. This study aimed to develop and test the feasibility of the diabetes empowerment (Dia-Empower) program for older adults with type 2 diabetes. A non-randomized controlled study with a matched sampling design was conducted. Community-dwelling older adults with diabetes were allocated to either the Dia-Empower program group or a control group. Changes in the primary (diabetes self-care and empowerment) and secondary outcomes (body composition and physical function) were compared between the groups. The scores for diabetes self-care and empowerment were significantly higher in the experimental group than in the control group. Changes in skeletal muscle mass and body fat ratio were significantly different between the groups. Handgrip strength and shoulder flexibility positively changed in the experimental group. The Dia-Empower program was feasible for older adults with diabetes in the community. In the future, it is necessary to study the long-term effects of the program and its effects on blood sugar control.

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.

Evaluating the Implementation of the Diabetes Self-Management Program in a Rural Population

The evidence-based Diabetes Self-Management Program (DSMP) has been shown to improve a variety of health-related outcomes, but the program has been challenging to implement in rural areas, and rural dissemination has been low. The purpose of this project was to evaluate the effect of implementing the DSMP on self-reported outcomes in a rural region. Through a collaboration with multiple partners, the Living Well program delivered 28 DSMP workshops from 2017 to 2019. Data were collected to determine whether there were post-intervention changes in patient-reported outcomes on measures of diabetes distress, self-management, and patient activation. In addition, secondary analysis of A1C was abstracted from the medical records of participants with type 2 diabetes who completed at least four sessions of a DSMP workshop between 2017 and 2019 and whose medical records had an A1C value in the year before the program and at least one A1C value >3 months after the program. Statistically significant improvements were seen for the Diabetes Distress Scale (P = 0.0017), the Diabetes Self-Management Questionnaire (P <0.0001) and the 10-item Patient Activation Measure (P <0.0001). There was no evidence of change in A1C over time in analyses of all participants (P = 0.5875), but a consistent though nonsignificant (P = 0.1087) decline in A1C was seen for a subset of participants with a baseline A1C ≥8%. This evaluation provides preliminary support for implementing the DSMP as part of a comprehensive treatment and self-management plan for people living with diabetes in rural areas.

Development and validation of the Highly Effective Health Behavior Pattern Inventory - Short Form

OBJECTIVES

The purpose of this study was to develop and validate a short form (SF) of the highly effective health behavior pattern inventory (HEBPI) for chronic disease patients for comfort to use.

METHODS

HEBPI-SF is a self-reported questionnaire based on highly effective health behaviors associated with building healthy habits. HEBPI-SF was validated by calculating adjusted odds ratios (aOR) for the 12 HEBPI-SF health behavior subscales and the maintenance of the 12 corresponding health habits.

RESULTS

HEBPI-SF developed in this study comprised 12 subscales and 53 items, utilizing patient data (N = 724) derived from the original HEBPI (12 subscales and 131items). HEBPI-SF demonstrated high reliability (Cronbach's α of 0.703-0.859) and showed that the 12 health behaviors included in the HEBPI are associated with the maintenance of the corresponding health habits (aOR: 2.29-8.42). The scores of the HEBPI-SF showed a positive correlation with physical, mental, social, spiritual and general health status, quality of life, and self-management strategies.

DISCUSSION

HEBPI-SF is a reliable tool for the assessment of health behaviors of chronically ill patients. Considering previous findings of simple health behaviors significantly affecting health status, this survey tool for the assessment of health behaviors is useful for promotion and maintenance of healthy habits.

Cost-effectiveness of Community-Based Depression Interventions for Rural and Urban Adults With Type 2 Diabetes: Projections From Program ACTIVE (Adults Coming Together to Increase Vital Exercise) II

OBJECTIVE

We estimated the cost-effectiveness of the Program ACTIVE (Adults Coming Together to Increase Vital Exercise) II community-based exercise (EXER), cognitive behavioral therapy (CBT), and EXER+CBT interventions in adults with type 2 diabetes and depression relative to usual care (UC) and each other.

RESEARCH DESIGN AND METHODS

Data were integrated into the Michigan Model for Diabetes to estimate cost and health outcomes over a 10-year simulation time horizon from the health care sector and societal perspectives, discounting costs and benefits at 3% annually. Primary outcome was cost per quality-adjusted life-year (QALY) gained.

RESULTS

From the health care sector perspective, the EXER intervention strategy saved $313 (USD) per patient and produced 0.38 more QALY (cost saving), the CBT intervention strategy cost $596 more and gained 0.29 more QALY ($2,058/QALY), and the EXER+CBT intervention strategy cost $403 more and gained 0.69 more QALY ($585/QALY) compared with UC. Both EXER and EXER+CBT interventions dominated the CBT intervention. Compared with EXER, the EXER+CBT intervention strategy cost $716 more and gained 0.31 more QALY ($2,323/QALY). From the societal perspective, compared with UC, the EXER intervention strategy saved $126 (cost saving), the CBT intervention strategy cost $2,838/QALY, and the EXER+CBT intervention strategy cost $1,167/QALY. Both EXER and EXER+CBT interventions still dominated the CBT intervention. In comparison with EXER, the EXER+CBT intervention strategy cost $3,021/QALY. Results were robust in sensitivity analyses.

CONCLUSIONS

All three Program ACTIVE II interventions represented a good value for money compared with UC. The EXER+CBT intervention was highly cost-effective or cost saving compared with the CBT or EXER interventions.

Effect of peer support intervention on diabetes distress in people with type 2 diabetes: A systematic review and meta-analysis

AIMS

To assess the effect of peer support intervention on diabetes distress in people with type 2 diabetes.

BACKGROUND

Diabetes distress may be decreased by peer support intervention, but findings about the effect of peer support on diabetes distress have been mixed.

DESIGN

A systematic review and meta-analysis of randomized controlled studies.

DATA SOURCES

PubMed, Embase, CENTRAL, PsycINFO, Web of Science, and CINAHL databases were searched for randomized controlled trials from inception to 30 June 2018.

REVIEW METHODS

Investigators assessed eligibility, extracted data, and assessed methodological quality. Standardized mean difference and 95% confidence intervals were calculated for pooled effect size.

RESULTS

A total of 13 studies included in systematic review and 10 in meta-analysis. In the random-effects model, the pooled effect size showed current peer support intervention did not significantly reduce diabetes distress in type 2 diabetes population compared with usual care.

CONCLUSION

High quality and well-designed studies targeting at reducing diabetes distress are needed to further test the effect of peer support intervention on diabetes distress.

Healthy aging with HIV: The role of self-management support

People living with HIV on antiretroviral treatment have significantly improved longevity, but as a result may also face increasing multimorbidity due to aging and long-term medication use. Thus, care needs for this population have evolved to require a chronic disease management approach in which self-management plays a central role. Here we highlight the importance of expanding self-management support options for people living with HIV, and discuss strategies for implementing and evaluating self-management interventions, outlining potential opportunities, challenges and solutions. We contend that standardized programs such as those offered through the Self-Management Resource Centre provide a rich opportunity to build the evidence base regarding the potential effectiveness of self-management support among people living with HIV. Thus we recommend enhancing self-management support through meaningful community-level collaboration with people with lived experience, careful assessment of process and outcome factors including who does not participate and why, attention to stigma and the specific needs of HIV priority groups, and consideration of how to extend engagement with services to address social and material needs beyond self-management program participation. We hope this reflection will serve as an aide for researchers and program managers to improve the array of evidence-based self-management support options available to people living with HIV.

Active Learning: Lessons From Women With Type 2 Diabetes in a Walking Program

PURPOSE

The purpose of this study was to explore the experiences and preferences of sedentary women with type 2 diabetes who had recently completed a pilot 12-week supervised treadmill walking study.

METHODS

A qualitative design was used. Content analysis was used to assess major themes and subthemes embedded within participants' responses to open-ended questions about their experiences of participating in a walking program. Women were recruited from a database of patients willing to be contacted for research studies.

RESULTS

Seven inner-city women with type 2 diabetes (71% African American, age 62 ± 4.2 years, A1C 6.8% ± 1.3, years since diagnosis 6.6 ± 3.4 years) completed the postprogram interview. Only 3 of the 7 women had ever received any diabetes education. Four major themes emerged: (1) supportive environment, (2) personal commitment: overcoming ambivalence, (3) learning, and (4) outcomes, and 8 subthemes emerged. A supportive environment (encouraging, person centered, social, and structured) in combination with actively learning about diabetes and self-monitoring the effects of exercise seemed to be associated with personal commitment and confidence in participating in a walking program.

CONCLUSIONS

Active/experiential learning in a supportive environment may enhance both personal diabetes knowledge and behaviors among women with little diabetes education and low activity levels.

A close look at lay-led self-management programs for chronic diseases and health care utilisation: A systematic review and meta-analysis

Introduction: Chronically ill people are confronted with significant challenges when dealing with health care services. Lay-led self-management programs aim to improve self-management skills and might enable patients to make appropriate decisions as to when to use health care services. Contrary to the general attitude that self-management programs reduce health care utilisation, we suspect that better self-management skills lead to increased or possibly more appropriate health care utilisation. Our review and meta-analysis sheds light on the relationship between lay-led self-management programs and health care utilisation. Methods: In March 2017, we searched 7 databases (CDSR, DARE, HTA, Medline, CINAHL, PsycInfo, and SSCI) to perform a systematic review and meta-analysis to identify studies that reported empirical data on lay-led self-management programs and health care utilisation. We extracted the characteristics of all primary studies and the data of four indicators of utilisation (physician visits, emergency department visits, hospital admissions, and length of stay in hospital), and analysed the role of health care utilisation in these studies. We present the results in frequency tables and as a conventional meta-analysis with the standardized mean difference (SMD), 95% confidence intervals (CI), and pooled overall effect sizes using RevMan 5.3.5. The manuscript follows the PRISMA checklist. Results: Overall, we include 49 primary studies; 10 studies provided sufficient data for the meta-analysis. Health care utilisation played a different role in the studies; 15 studies reported a clear explicit hypothesis on the influence of a lay-led self-management program on health care utilisation, and 17 studies assumed an implicit assumption. 8 studies discussed the possibility that a lay-led self-management program could lead to more appropriate health care utilisation. The meta-analysis showed mixed results, and many effect sizes were not statistically significant. The participants of a lay-led self-management program had fewer emergency department visits (SMD: -0.08; 95% CI: -0.15 to -0.01; p=0.02) than the control group. Conclusion: Although the statistically significant effects of the meta-analysis are low, our overall findings show that only a small number of the included studies tackled the task of comprehensively investigating self-management skills in the context of health care utilisation. This fails to do justice to the potential of self-management programs. It is essential to consider the appropriateness of health care utilisation. We propose the term self-management-sensitive utilisation for this purpose.

Effectiveness of peer led intervention in improvement of clinical outcomes among diabetes mellitus and hypertension patients-A systematic review and meta-analysis

Peer-led intervention allows the patients to develop knowledge, skills and confidence in managing their own conditions. Hence this review was done to assess the effectiveness of peer-led intervention in improving the clinical outcomes of DM and HTN patients. We conducted systematic search in Medline, CENTRAL, Sciencedirect and Google-Scholar from inception till May 2018 and retrieved 3654 citations. Meta-analysis was performed using random-effects model and pooled mean difference (MD) was reported with 95% CI. Publication bias was assessed using Egger's test. 29 trials (26 DM and 3 HTN) with 6363 participants were included. There was positive effect of peer led intervention on DM and HTN with pooled MD of -0.28% [95%CI: -0.45 to -0.11] and -7.52mmHg [95%CI: -14.39 to -0.66]. There was significant heterogeneity and publication bias in both DM and HTN trials. Sensitivity analysis showed only little improvement in the final estimate. Peer support intervention is effective and causes statistically significant reduction in HbA1C and systolic blood pressure among DM and HTN patients.

Interventions for self-management of type 2 diabetes: An integrative review

BACKGROUND

Type 2 diabetes mellitus has been identified as one of the most challenging chronic illnesses to manage. Since the management of diabetes is mainly accomplished by patients and families, self-management has become the mainstay of diabetes care. However, a significant proportion of patients fail to engage in adequate self-management. A priority research question is how do interventions affect the self-management behaviors of persons with Type 2 diabetes?

PURPOSE/OBJECTIVES

The purpose of this integrative review is to provide a summary and critique of interventions that support diabetes self-management in the patient with Type II diabetes mellitus.

DESIGN

An integrative review design, with a comprehensive methodological approach of reviews, allowing inclusion of experimental and non-experimental studies.

PROCEDURES

A comprehensive search was conducted via Ebscohost using databases of Academic Search Complete, CINAHL, Health Source: Nursing/Academic Edition, MEDLINE, PsycArtiCLES, and PsycInfo. The final number of papers used for this review were: motivational interviewing (6), peer support/coaching (10), problem solving therapy (3), technology-based interventions (30), lifestyle modification programs (7), patient education (11), mindfulness (3), and cognitive behavioral therapy (5).

RESULTS

Studies were examined from seventeen countries including a broad range of cultures and ethnicities. While interventions have shown mixed results in all interventional categories, many studies do support small to modest improvements in physiologic, behavioral, and psychological outcome measures. Considerable heterogeneity of interventions exists. The most commonly reported physiologic measure was HbA1c level. Outcome measures were collected mostly at 6 and 12 months. Duration of most research was limited to one year.

CONCLUSIONS

Research exploring the impact of interventions for self-management has made major contributions to the care of persons with type 2 diabetes, from offering suggestions for improving care, to stimulating new questions for research. However, implications for clinical practice remain inconclusive, and limitations in existing research suggest caution in interpreting results of studies.

Relationships Among Perceived Functional Capacity, Self-Efficacy, and Disability After Dysvascular Amputation

BACKGROUND

Prosthesis rehabilitation after dysvascular transtibial amputation (TTA) is focused on optimizing functional capacity with limited emphasis on promoting health self-efficacy. Self-efficacy interventions decrease disability for people living with chronic disease, but the influence of self-efficacy on disability is unknown for people with dysvascular TTA.

OBJECTIVES

To identify if self-efficacy mediates the relationship between self-reported functional capacity and disability after dysvascular TTA.

DESIGN

Cross-sectional, secondary data analysis.

SETTING

Outpatient rehabilitation facilities.

PARTICIPANTS

Thirty-eight men (63.6 ± 9.1 years old) with dysvascular TTA.

METHODS

Participants had been living with an amputation for less than 6 months and using walking as their primary form of locomotion using a prosthesis. The independent variable, functional capacity, was measured using the Prosthesis Evaluation Questionnaire-Mobility Scale (PEQ-MS). The proposed mediator, self-efficacy, was measured with the Self-Efficacy of Managing Chronic Disease questionnaire (SEMCD).

MAIN OUTCOME MEASURE

Disability was measured using the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) questionnaire.

RESULTS

The relationship between self-reported functional capacity and disability is partially mediated by self-efficacy. Relationships between WHODAS 2.0 and PEQ-MS (r = -0.61), WHODAS 2.0 and SEMCD (r = -0.51), and PEQ-MS and SEMCD (r = 0.44) were significant (P < .01). Controlling for SEMCD (P = .04), the relationship between PEQ-MS and WHODAS 2.0 remained significant (P < .01). Statistically significant mediation was determined by a bootstrap method for the product of coefficients (95% confidence interval: -2.23, -7.39).

CONCLUSIONS

This study provides initial evidence that the relationship between self-reported functional capacity and disability is partially mediated by self-efficacy after dysvascular TTA. The longitudinal effect of self-efficacy should be further examined to identify causal pathways of disability after dysvascular amputation. Furthermore, additional factors contributing to the relationship between self-reported functional capacity and disability need to be identified.

LEVEL OF EVIDENCE

III.

Effect of peer support interventions on cardiovascular disease risk factors in adults with diabetes: a systematic review and meta-analysis

BACKGROUND

Peer support by persons affected with diabetes improves peer supporter's diabetes self-management skills. Peer support interventions by individuals who have diabetes or are affected by diabetes have been shown to improve glycemic control; however, its effects on other cardiovascular disease risk factors in adults with diabetes are unknown. We aimed to estimate the effect of peer support interventions on cardiovascular disease risk factors other than glycemic control in adults with diabetes.

METHODS

We conducted a systematic review and meta-analysis of randomized controlled trials comparing peer support interventions to a control condition in adults affected by diabetes that measured any cardiovascular disease risk factors [Body Mass Index, smoking, diet, physical activity, cholesterol level, glucose control and blood pressure]. Quality was assessed by Cochrane's risk of bias tool. We calculated standardized mean difference effect sizes using random effects models.

RESULTS

We retrieved 438 citations from multiple databases including OVID MEDLINE, Cochrane database and Scopus, and author searches. Of 233 abstracts reviewed, 16 articles met inclusion criteria. A random effects model in a total of 3243 participants showed a positive effect of peer support interventions on systolic BP with a pooled effect size of 2.07 mmHg (CI 0.35 mmHg to 3.79 mmHg, p = 0.02); baseline pooled systolic blood pressure was 137 mmHg. There was a non-significant effect of peer support interventions on diastolic blood pressure, cholesterol, body mass index, diet and physical activity. Cardiovascular disease risk factors other than glycemic control outcomes were secondary outcomes in most studies and baseline values were normal or mildly elevated. Only one study reported smoking outcomes.

CONCLUSIONS

We found a small (2 mmHg) positive effect of peer support interventions on systolic blood pressure in adults with diabetes whose baseline blood pressure was on average minimally elevated. Additional studies need to be conducted to further understand the effect of peer support interventions on high-risk cardiovascular disease risk factors in adults with diabetes.

New model for diabetes primary health care based on patient empowerment and the right to preventive health: the MIDE program

Objective.

To evaluate Mexico’s national Integrated Management of Diabetes in Stages (Manejo Integral de la Diabetes por Etapas, MIDE) program using three types of indicators: process, structure, and impact.

Methods.

A cross-sectional study was conducted using data for 97 452 people with diabetes (PWD) who participated in the MIDE patient empowerment program (PEP) at “MIDE modules” (standardized diabetes health care units) at Mexico’s Institute for Social Security and Services for State Workers (Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado, ISSSTE) hospital clinics and family medical clinics nationwide between 2007 and 2014. The program promotes diabetes patient empowerment and self-care through outpatient consultations with a multidisciplinary health care team supported by continuous training. Baseline data were compared with results post-program for the following indicators: process (metabolic control (MetC), based on glycated hemoglobin (HbA1c), triglyceride (TG), and total cholesterol (TC) levels); structure (number of MIDE modules installed at ISSSTE clinics and number of patients/health personnel accredited as diabetes experts/awarded diplomas); and impact (average number of patient illness days (IDs) and hospitalization episodes (HEs) per PWD over a 12-month period).

Results.

Over the seven-year study period, the proportion of patients with MetC (HbA1c < 7.0%, TG < 150 mg/dL, and TC < 200 mg/dL) increased significantly (from 35.4% to 60% (with a peak level of 62% in 2013); P < 0.001); average HbA1c, triglycerides, and total cholesterol per PWD dropped by 25%, 31%, and 11% respectively; average number of IDs and HEs per PWD over a 12-month period dropped by 38% and 41% respectively; a total of 140 MIDE modules were installed at ISSSTE clinics; and a total of 1 117 diplomas were awarded to 826 health professionals, and 2 613 PWD were accredited as “patient experts in diabetes.”

Conclusions.

The MIDE PEP is feasible, usable, and acceptable to PWD. The program improves MetC; reduces the frequency of IDs and HEs; and facilitates patient participation, the involvement of health personnel, and shared decision-making.

Diabetes self-management education reduces risk of all-cause mortality in type 2 diabetes patients: a systematic review and meta-analysis

BACKGROUND

Diabetes self-management education is an essential part of diabetes care, but its impact on all-cause mortality risk of type 2 diabetes patients is unclear. A systematic review and meta-analysis aiming to elucidate the impact of diabetes self-management education on all-cause mortality risk of type 2 diabetes patients was performed.

METHODS

Randomised controlled trials were identified though literature search in Medline, Embase, CENTRAL, conference abstracts, and reference lists. Only randomised controlled trials comparing diabetes self-management education with usual care in type 2 diabetes patients and reporting outcomes after a follow-up of at least 12 months were considered eligible. Risk ratios with 95 %CIs were pooled. This study was registered at PROSPERO with the number of CRD42016043911.

RESULTS

42 randomised controlled trials containing 13,017 participants were included. The mean time of follow-up was 1.5 years. There was no heterogeneity among those included studies (I ² = 0 %). Mortality occurred in 159 participants (2.3 %) in the diabetes self-management education group and in 187 (3.1 %) in the usual care group, and diabetes self-management education significantly reduced risk of all-cause mortality in type 2 diabetes patients (pooled risk ratios : 0.74, 95 %CI 0.60-0.90, P = 0.003; absolute risk difference: -0.8 %, 95 %CI -1.4 to -0.3). Both multidisciplinary team education and nurse-led education could significantly reduce mortality risk in type 2 diabetes patients, and the pooled risk ratios were 0.66 (95 %CI 0.46-0.96, P = 0.02; I ² = 0 %) and 0.64 (95 % CI 0.47- 0.88, P = 0.005; I ² = 0 %), respectively. Subgroup analyses of studies with longer duration of follow-up (≥1.5 years) or larger sample size (≥300) also found a significant effect of diabetes self-management education in reducing mortality risk among type 2 diabetes. Significant effect of diabetes self-management education in reducing mortality risk was also found in those patients receiving diabetes self-management education with contact hours more than 10 h (pooled risk ratio: 0.60, 95 %CI 0.44-0.82, P = 0.001; I ² = 0 %), those receiving repeated diabetes self-management education (pooled RR: 0.71, P = 0.001; I ² = 0 %), those receiving diabetes self-management education using structured curriculum (pooled risk ratio: 0.72, P = 0.01; I ² = 0 %) and those receiving diabetes self-management education using in-person communication (pooled risk ratio: 0.75, P = 0.02; I ² = 0 %). The quality of evidence for the effect of diabetes self-management education in reducing all-cause mortality risk among type 2 diabetes patients was rated as moderate according to the Grading of Recommendations Assessment, Development, and Evaluation method, and the absolute risk reduction of all-cause mortality of type 2 diabetic patients by diabetes self-management education was estimated to be 4 fewer per 1000 person-years (from 1 fewer to 6 fewer).

CONCLUSIONS

The available evidence suggests that diabetes self-management education can reduce all-cause mortality risk in type 2 diabetes patients. Further clinical trials with longer time of follow-up are needed to validate the finding above.

Peer Support Interventions for Adults With Diabetes: A Meta-Analysis of Hemoglobin A1c Outcomes

PURPOSE

Peer support intervention trials have shown varying effects on glycemic control. We aimed to estimate the effect of peer support interventions delivered by people affected by diabetes (those with the disease or a caregiver) on hemoglobin A_1c (HbA_1c) levels in adults.

METHODS

We searched multiple databases from 1960 to November 2015, including Ovid MEDLINE, the Cochrane Central Register of Controlled Trials, CINAHL, and Scopus. We included randomized controlled trials (RCTs) of adults with diabetes receiving peer support interventions compared with otherwise similar care. Seventeen of 205 retrieved studies were eligible for inclusion. Quality was assessed with the Cochrane risk of bias tool. We calculated the standardized mean difference (SMD) of change in HbA_1c level from baseline between groups using a random effects model. Subgroup analyses were predefined.

RESULTS

Seventeen studies (3 cluster RCTs, 14 RCTs) with 4,715 participants showed an improvement in pooled HbA_1c level with an SMD of 0.121 (95% CI, 0.026-0.217; P = .01; I² = 60.66%) in the peer support intervention group compared with the control group; this difference translated to an improvement in HbA_1c level of 0.24% (95% CI, 0.05%-0.43%). Peer support interventions showed an HbA_1c improvement of 0.48% (95% CI, 0.25%-0.70%; P <.001; I² = 17.12%) in the subset of studies with predominantly Hispanic participants and 0.53% (95% CI, 0.32%-0.73%; P <.001; I² = 9.24%) in the subset of studies with predominantly minority participants; both were clinically relevant. In sensitivity analysis excluding cluster RCTs, the overall effect size changed little.

CONCLUSIONS

Peer support interventions for diabetes overall achieved a statistically significant but minor improvement in HbA_1c levels. These interventions may, however, be particularly effective in improving glycemic control for people from minority groups, especially those of Hispanic ethnicity.