Scoping meta-review: introducing a new methodology

The use of advance directives for autonomy in dementia care: A scoping meta-review and thematic synthesis

Dementia may reduce individuals' capacity for autonomy and decision-making competence. Advance directives are subject to theoretical bioethical debate as tools to safeguard or extend autonomy in dementia. However, the extent and manner in which advance directives are actually used for these purposes in practice remain less examined. We aimed to examine how advance directives are used as tools for individual autonomy in dementia care. We systematically searched six databases and performed a thematic analysis and synthesis of included reviews based on an original model of six autonomy-relevant dimensions of advance directives. A total of 18 reviews met the inclusion criteria. We identified 12 themes across six dimensions. We found a lack of knowledge integration on the actual use of advance directives for autonomy in dementia care. Evidence suggests significant variation in the autonomy-relevant dimensions of advance directives, with a tendency towards an inconsistent or low level of implementation as a tool for autonomy. Further reviews and primary studies on all aspects of the use of advance directives for autonomy in dementia care would contribute significantly to dementia research and practice.

The power of language: how to bridge the gap between healthcare research and patients - a scoping review

OBJECTIVE

The value of patient involvement to the design, conduct, and outcomes of healthcare research is increasingly being recognized. Patient involvement also provides greater patient accessibility and contribution to research. However, the use of inaccessible and technical language when communicating with patients is a barrier to effective patient involvement.

METHODS

We analyzed peer-reviewed and gray literature on how language is used in communication between healthcare researchers and patients. We used this analysis to generate a set of recommendations for healthcare researchers about using more inclusive and accessible language when involving patients in research. This scoping review adheres to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) extension for Scoping Review (PRISMA-ScR) checklist.

RESULTS

Four major themes about the use of language were developed from the literature analysis and were used to develop the set of recommendations. These recommendations include guidance on using standardized terminology and plain language when involving patients in healthcare research. They also discuss the implementation of co-development practices, patient support initiatives, and researcher training, as well as ways to improve emotional awareness and the need for greater equality, diversity, and inclusion.

DISCUSSION AND CONCLUSION

The use of inclusive, empathetic, and clear language can encourage patients to be involved in research and, once they are involved, make them feel like equal, empowered, and valued partners. Working toward developing processes and guidelines for the use of language that enables an equal partnership between researchers and patients is critical.

Standardization of the assessment process within telerehabilitation in chronic diseases: a scoping meta-review

Background

Telerehabilitation (TR) interventions are receiving increasing attention. They have been evaluated in various scientific areas through systematic reviews. However, there is a lack of data on how to standardize assessment and report on their domains to guide researchers across studies and bring together the best evidence to assess TR for chronic diseases.

Aims and objectives

The aim of this study was to identify domains of assessment in TR and to qualitatively and quantitatively analyze how and when they are examined to gain an overview of assessment in chronic disease.

Methods

A scoping meta-review was carried out on 9 databases and gray literature from 2009 to 2019. The keyword search strategy was based on "telerehabilitation", “evaluation", “chronic disease" and their synonyms. All articles were subjected to qualitative analysis using the Health Technology Assessment (HTA) Core Model prior to further analysis and narrative synthesis.

Results

Among the 7412 identified articles, 80 studies met the inclusion criteria and addressed at least one of the noncommunicable diseases (NCD) categories of cardiovascular disease (cardiovascular accidents), cancer, chronic respiratory disease, diabetes, and obesity. Regarding the domains of assessment, the most frequently occurring were “social aspect” (n = 63, 79%) (e.g., effects on behavioral changes) and “clinical efficacy” (n = 53, 66%), and the least frequently occurring was “safety aspects” (n = 2, 3%). We also identified the phases of TR in which the assessment was conducted and found that it most commonly occurred in the pilot study and randomized trial phases and least commonly occurred in the design, pretest, and post-implementation phases.

Conclusions

Through the HTA model, this scoping meta-review highlighted 10 assessment domains which have not been studied with the same degree of interest in the recent literature. We showed that each of these assessment domains could appear at different phases of TR development and proposed a new cross-disciplinary and comprehensive method for assessing TR interventions. Future studies will benefit from approaches that leverage the best evidence regarding the assessment of TR, and it will be interesting to extend this assessment framework to other chronic diseases.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12913-022-08370-y.

The Health of Migrant Agricultural Workers in Europe: A Scoping Review

Agriculture is a niche market for migrant workers, and one of the sectors with the highest rates of accidents, deaths and work-related health problems. To review and synthesize existing literature on the health conditions of international migrant agricultural workers in Europe. A scoping review of scientific literature published until March 2021 was conducted in PubMed, Scopus, WoS and OpenGrey, following Arksey & O'Malley's theoretical framework where 5894 references were retrieved and screened. Nineteen articles were selected, reviewed and synthetized. The country with the highest number of studies published (n = 9) was Spain. The design of the studies was mainly cross-sectional (n = 13). The main health problems identified were: lower back pain and other musculoskeletal problems, dermatitis, gastrointestinal and respiratory infections, anxiety, stress, depression and barriers to access healthcare services. Migrant agricultural workers are a neglected population with conditions of vulnerability and precariousness, physical and mental health problems and poor working conditions. Interventions to reduce or eliminate language, cultural and administrative barriers to ensure access to healthcare services are needed, as well as designing a common European framework to protect the rights of migrant agricultural workers and their families.

Language, Speech, and Facial Expression Features for Artificial Intelligence-Based Detection of Cancer Survivors' Depression: Scoping Meta-Review

BACKGROUND

Cancer survivors often experience disorders from the depressive spectrum that remain largely unrecognized and overlooked. Even though screening for depression is recognized as essential, several barriers prevent its successful implementation. It is possible that better screening options can be developed. New possibilities have been opening up with advances in artificial intelligence and increasing knowledge on the connection of observable cues and psychological states.

OBJECTIVE

The aim of this scoping meta-review was to identify observable features of depression that can be intercepted using artificial intelligence in order to provide a stepping stone toward better recognition of depression among cancer survivors.

METHODS

We followed a methodological framework for scoping reviews. We searched SCOPUS and Web of Science for relevant papers on the topic, and data were extracted from the papers that met inclusion criteria. We used thematic analysis within 3 predefined categories of depression cues (ie, language, speech, and facial expression cues) to analyze the papers.

RESULTS

The search yielded 1023 papers, of which 9 met the inclusion criteria. Analysis of their findings resulted in several well-supported cues of depression in language, speech, and facial expression domains, which provides a comprehensive list of observable features that are potentially suited to be intercepted by artificial intelligence for early detection of depression.

CONCLUSIONS

This review provides a synthesis of behavioral features of depression while translating this knowledge into the context of artificial intelligence-supported screening for depression in cancer survivors.

Fiberoptic endoscopic evaluation of swallowing and videofluoroscopy swallowing assessment in adults in residential care facilities: a scoping review protocol

OBJECTIVE

This scoping review will identify and explore existing evidence on the use of instrumental swallowing assessment in the diagnosis and management of dysphagia in adults living in residential care facilities.

INTRODUCTION

Oropharyngeal dysphagia is prevalent among adults living in residential care facilities. Videofluoroscopy and fiberoptic endoscopic evaluation of swallowing are instrumental assessment procedures commonly utilized in the evaluation of oropharyngeal dysphagia in hospital and community settings. However, little is known about the use of these procedures in residential care facilities. To ensure evidence-based assessment of oropharyngeal dysphagia and to guide future research, exploration of the current use and clinical utility of videofluoroscopy and fiberoptic endoscopic evaluation of swallowing in residential care facilities is needed.

INCLUSION CRITERIA

Published and gray literature written in English from 2000 onward that discusses instrumental swallowing assessment of adults in residential care facilities will be included in the review.

METHODS

A three-step search strategy will be used to explore relevant literature. All citations and articles retrieved during the searches will be imported into a software application for systematic reviews. Once duplicates are removed, two reviewers will screen the titles and abstracts against predefined inclusion criteria. Information will be extracted from literature that meets the selection criteria using a purposefully developed charting form. The search strategy and results will be illustrated through a Preferred Reporting Items for Systematic Reviews and Meta-Analyses diagram. Key findings and their relationship to the research questions will be summarized in a chart and discussed in interpretive narrative form.

Which literacy for health promotion: health, food, nutrition or media?

Education and literacy are important aspects of health promotion. The potential for health literacy to promote healthier choices has been widely examined, with studies variously incorporating food literacy, nutrition literacy and/or media literacy as components of health literacy, rather than treating each as unique concepts for health promotion. This study examines similarities and differences across health literacy, food literacy, nutrition literacy and health-promoting media literacy to highlight how each literacy type theorizes the relationship between education and health. A meta-review of existing scoping and systematic reviews examining literacy conceptualizations was conducted to examine the four literacies. Representative concept definitions were extracted and key competencies (or skills) and desired consequences were identified and grouped into subcategories for analysis. This study located 378 articles, of which 17 scoping/systematic reviews were included (10 for health literacy, 3 for food, 1 for nutrition and 3 for media). Representative concept definitions of the four literacy types revealed three skill categories (information acquisition, information analysis, and the application of information) and three categories of desired consequences (knowledge, attitudes and behaviors), with each of the four literacy types emphasizing varied collections of skills and desired consequences. Despite perceived similarities in content, health, food, nutrition and media literacy conceptualize the relationship between education and health differently, emphasizing the distinct types of knowledge to promote health-related outcomes. A better understanding of the differences between these four literacies will lead to informed decision making for researchers, educators and health practitioners in intervention design and implementation.

From Epidemiologic Knowledge to Improved Health: A Vision for Translational Epidemiology

Epidemiology should aim to improve population health; however, no consensus exists regarding the activities and skills that should be prioritized to achieve this goal. We performed a scoping review of articles addressing the translation of epidemiologic knowledge into improved population health outcomes. We identified 5 themes in the translational epidemiology literature: foundations of epidemiologic thinking, evidence-based public health or medicine, epidemiologic education, implementation science, and community-engaged research (including literature on community-based participatory research). We then identified 5 priority areas for advancing translational epidemiology: 1) scientific engagement with public health; 2) public health communication; 3) epidemiologic education; 4) epidemiology and implementation; and 5) community involvement. Using these priority areas as a starting point, we developed a conceptual framework of translational epidemiology that emphasizes interconnectedness and feedback among epidemiology, foundational science, and public health stakeholders. We also identified 2-5 representative principles in each priority area that could serve as the basis for advancing a vision of translational epidemiology. We believe an emphasis on translational epidemiology can help the broader field to increase the efficiency of translating epidemiologic knowledge into improved health outcomes and to achieve its goal of improving population health.

A scoping review of consumer needs for cancer information

OBJECTIVE

This study was a scoping review of research on cancer-related health information seeking and needs of patients, survivor, non-patients, and caregivers.

METHODS

This study used the COSI model to search for articles published from 2007 to 2017.

RESULTS

In total, 117 articles with titles and abstracts including the following terms were selected: cancer, health, information, seeking. Non-patients obtained information from the Internet, doctors, and media, whereas patients obtained information from doctors, the Internet, and media. Information needs were the highest for treatment, prognosis, and psychosocial support. Patients had the highest need for information on prognosis and treatment, whereas non-patients had the highest need for general cancer information, prevention, and cancer examination. Caregivers sought information about treatment, psychosocial support, and prevention.

CONCLUSION

This study revealed an increase in the number of research articles identifying cancer patients' information needs. Cancer patients rely on health professionals for information; thus, relevant materials are needed. Furthermore, not only medical but also psychosocial support information is needed.

PRACTICE IMPLICATIONS

There is a need for cancer information from health professionals, and thus for patient-centered training materials. Furthermore, a survey system to evaluate consumers' cancer information needs should be developed.

Periodontal complications with obesity

The purpose of this paper was to identify and summarize current evidence describing periodontal complications associated with obesity. Electronic searches supplemented with manual searches were carried out to identify relevant systematic reviews. Identification, screening, eligibility, and inclusion of studies were performed independently by two reviewers. A MeaSurement Tool to Assess systematic Reviews (AMSTAR) was used to assess the quality and risk of bias of the included reviews. From 430 titles and abstracts screened, 14 systematic reviews were considered as eligible for inclusion in this meta-review. Eight reviews reported on cross-sectional studies investigating the association of obesity and periodontal diseases, 4 included longitudinal studies, 5 addressed response to periodontal therapy, 5 reported on studies investigating biomarkers, and only 2 were related to pediatric population samples. Systematic review summaries in the various study design domains (cross-sectional, longitudinal and experimental) report that obese individuals are more likely to have periodontal diseases, with more severe periodontal conditions, than nonobese individuals, with cross-sectional evidence congruent with longitudinal studies showing that obesity or weight gain increases the risk of periodontitis onset and progression. Published research on the effect of obesity on responses to periodontal therapy, or systemic or local biomarkers of inflammation, is variable and therefore inconclusive based on the evidence currently available, which suggests that overweight/obesity contributes to periodontal complications independently of other risk factors, such as age, gender, smoking, or ethnicity. This evidence supports the need for risk assessments for individual patients to facilitate personalized approaches in order to prevent and treat periodontal diseases.

Out of focus: tailoring the cascade of care to the needs of women living with HIV

Around half of the global adult HIV-positive population are women, yet historically women have been under-represented in clinical studies of antiretroviral therapy (ART) and there has been minimal exploration of gender-specific factors related to the response to and appropriateness of treatment choices in women living with HIV (WLWH). There are several key issues pertaining to the cascade of HIV care that make it important to differentiate WLWH from men living with HIV. Factors that are gender specific may impact on the status of WLWH, affecting access to diagnosis and treatment, optimal clinical management, ART outcomes, retention in care, and the overall long-term wellbeing of WLWH. In this review, we discuss the results of recently reported women-only clinical trials and highlight the key unmet needs of WLWH as they pertain to the cascade of HIV care across World Health Organization European Region countries. As significant knowledge gaps remain, the review identifies key areas where further research is required, in order to support improved management of WLWH and guide informed clinical decision-making, including addressing psychosocial factors as part of comprehensive care.

Systematic reviews and cancer research: a suggested stepwise approach

Systematic reviews, with or without meta-analysis, play an important role today in synthesizing cancer research and are frequently used to guide decision-making. However, there is now an increase in the number of systematic reviews on the same topic, thereby necessitating a systematic review of previous systematic reviews. With a focus on cancer, the purpose of this article is to provide a practical, stepwise approach for systematically reviewing the literature and publishing the results. This starts with the registration of a protocol for a systematic review of previous systematic reviews and ends with the publication of an original or updated systematic review, with or without meta-analysis, in a peer-reviewed journal. Future directions as well as potential limitations of the approach are also discussed. It is hoped that the stepwise approach presented in this article will be helpful to both producers and consumers of cancer-related systematic reviews and will contribute to the ultimate goal of preventing and treating cancer.

Quality of Life and Breast Cancer: How Can Mind⁻Body Exercise Therapies Help? An Overview Study

Breast cancer survivors experience extensive treatments, threatening their quality of life. Complementary therapies used as a supplement to cancer treatment may control symptoms, enhance quality of life, and contribute to overall patient care. Mind–body exercise therapies might motivate cancer survivors to exercise, and assist them in regaining health. The purpose of this overview study is to study benefits from mind–body exercise of yoga, tai chi chuan and qigong upon quality of life in breast cancer populations. A systematic overview of reviews was applied. Literature search in five electronic databases and in reference lists was performed during April 2017. In addition, experts in the field were consulted. Of 38 identified titles, 11 review articles, including six meta-analyses were found eligible for review. Methodological quality was high for the majority of quality domains. Yoga, the most studied mind–body therapy, was found to benefit breast cancer patients’ psychological quality of life, while less support was established concerning physical quality of life elements. The evidence of improvements of quality of life from tai chi chuan and qigong remains unclear. Breast cancer survivors’ experiences of psychological and social well-being may be enhanced by practicing yoga.

A narrative meta-review of a series of systematic and meta-analytic reviews on the intervention outcome for children with developmental co-ordination disorder

BACKGROUND

Systematic reviews and meta-analyses are considered to be the 'gold standards' for synthesizing research evidence in particular areas of enquiry. However, such reviews are only useful if they themselves are conducted to a sufficiently high standard. The aim of this study was to conduct a narrative meta-review of existing analyses of the effectiveness of interventions designed for children with developmental co-ordination disorder (DCD).

METHODS

A narrative meta-review of systematic and meta-analytic reviews aimed at evaluating the effectiveness of intervention for children with DCD was conducted on studies published between 1950 and 2014. We identified suitable reviews, using a modification of the Population, Intervention, Comparison, Outcome (PICO) system and evaluated their methodological quality using the Assessment of Multiple Systematic Reviews (AMSTAR). In addition, the consistency of the quality of evidence and classification of intervention approaches was assessed independently by two assessors.

RESULTS

The literature search yielded a total of four appropriate reviews published in the selected time span. The Assessment of Multiple Systematic Reviews percentage quality scores assigned to each review ranged from 0% (low quality) to 55% (medium quality). Evaluation of the quality of evidence and classification of intervention approaches yielded a discrepancy rate of 25%. All reviews concluded that some kind of intervention was better than none at all.

CONCLUSIONS

Although the quality of the reviews progressively improved over the years, the shortcomings identified need to be addressed before concrete evidence regarding the best approach to intervention for children with DCD can be specified.

Public Health Interventions for Aedes Control in the Time of Zikavirus- A Meta-Review on Effectiveness of Vector Control Strategies

BACKGROUND

There is renewed interest in effective measures to control Zika and dengue vectors. A synthesis of published literature with a focus on the quality of evidence is warranted to determine the effectiveness of vector control strategies.

METHODOLOGY

We conducted a meta-review assessing the effectiveness of any Aedes control measure. We searched Scopus and Medline for relevant reviews through to May 2016. Titles, abstracts and full texts were assessed independently for inclusion by two authors. Data extraction was performed in duplicate and validity of the evidence was assessed using GRADE criteria.

FINDINGS

13 systematic reviews that investigated the effect of control measures on entomological parameters or disease incidence were included. Biological controls seem to achieve better reduction of entomological indices than chemical controls, while educational campaigns can reduce breeding habitats. Integrated vector control strategies may not always increase effectiveness. The efficacy of any control programme is dependent on local settings, intervention type, resources and study duration, which may partly explain the varying degree of success between studies. Nevertheless, the quality of evidence was mostly low to very low due to poor reporting of study design, observational methodologies, heterogeneity, and indirect outcomes, thus hindering an evidence-based recommendation.

CONCLUSIONS

The evidence for the effectiveness of Aedes control measures is mixed. Chemical control, which is commonly used, does not appear to be associated with sustainable reductions of mosquito populations over time. Indeed, by contributing to a false sense of security, chemical control may reduce the effectiveness of educational interventions aimed at encouraging local people to remove mosquito breeding sites. Better quality studies of the impact of vector control interventions on the incidence of human infections with Dengue or Zika are still needed.

Factors predicting outcome in whiplash injury: a systematic meta-review of prognostic factors

Background

Whiplash injuries are among the leading injuries related to car crashes and it is important to determine the prognostic factors that predict the outcome of patients with these injuries. This meta-review aims to identify factors that are associated with outcome after acute whiplash injury.

Materials and methods

A systematic search for all systematic reviews on outcome prediction of acute whiplash injury was conducted across several electronic databases. The search was limited to publications in English, and there were no geographical or time of publication restrictions. Quality appraisal was conducted with A Measurement Tool to Assess Systematic Reviews.

Results

The initial search yielded 207 abstracts; of these, 195 were subsequently excluded by topic or method. Twelve systematic reviews with moderate quality were subsequently included in the analysis. Post-injury pain and disability, whiplash grades, cold hyperalgesia, post-injury anxiety, catastrophizing, compensation and legal factors, and early healthcare use were associated with continuation of pain and disability in patients with whiplash injury. Post-injury magnetic resonance imaging or radiographic findings, motor dysfunctions, or factors related to the collision were not associated with continuation of pain and disability in patients with whiplash injury. Evidence on demographic and three psychological factors and prior pain was conflicting, and there is a shortage of evidence related to the significance of genetic factors.

Conclusions

This meta-review suggests an association between initial pain and anxiety and the outcome of acute whiplash injury, and less evidence for an association with physical factors.

Level of evidence

Level 1.

Electronic supplementary material

The online version of this article (doi:10.1007/s10195-016-0431-x) contains supplementary material, which is available to authorized users.

Efficacy of homecare regimens for mechanical plaque removal in managing gingivitis a meta review

FOCUSED QUESTION

Based on evidence as presented in systematic reviews what is the efficacy and safety of available homecare toothbrush regimens for mechanical plaque removal on plaque and gingivitis in adults?

MATERIAL & METHODS

Three Internet sources were used (up to and including August 2014) to search for appropriate papers that satisfied the study purpose. Plaque scores and gingivitis scores were considered to be the primary parameter of interest. Safety was considered an important facet in relation to efficacy. Data and conclusions as presented in the selected papers were extracted. The potential risk of bias was estimated and the emerging evidence was graded.

RESULTS

Independent screening of 176 unique reviews resulted in 10 published and eligible systematic reviews. They were categorized into one review evaluating the effect of an oral hygiene instruction with a toothbrush on plaque and gingivitis scores, five evaluating the efficacy of manual and power toothbrushes and three reviews evaluating toothbrush safety and one evaluating toothbrush contamination.

CONCLUSION

Tooth brushing is effective in reducing levels of dental plaque. With respect to gingivitis power toothbrushes have a benefit over manual toothbrushes. The greatest body of evidence was available for oscillating-rotating brushes. Tooth brushing generally can be considered safe for the teeth and their investing tissues.

Efficacy of inter-dental mechanical plaque control in managing gingivitis--a meta-review

FOCUSED QUESTION

What is the effect of mechanical inter-dental plaque removal in addition to toothbrushing, on managing gingivitis using various formats of inter-dental self-care in adults based on evidence gathered from existing systematic reviews?

MATERIAL & METHODS

Three Internet sources were searched by a strategy designed to include systematic reviews on inter-dental cleaning devices. Plaque and gingivitis scores were the primary parameters of interest. Characteristics of selected papers were extracted. The potential risk of bias was estimated and the acquired evidence was graded.

RESULTS

Screening of 395 papers resulted in six systematic reviews. Two papers evaluated the efficacy of dental floss, two of inter-dental brushes (IDB), one of woodsticks and one of the oral irrigator. Weak evidence of unclear or small magnitude was retrieved that supported dental floss, woodsticks and the oral irrigator to reduce gingivitis in addition to toothbrushing. No concomitant evidence for an effect on plaque emerged. There is moderate evidence that IDBs in combination with toothbrushing reduce both plaque and gingivitis.

CONCLUSION

Evidence suggests that inter-dental cleaning with IDBs is the most effective method for inter-dental plaque removal. The majority of available studies fail to demonstrate that flossing is generally effective in plaque removal. All investigated devices for inter-dental self-care seem to support the management of gingivitis, however, to a varying extend.

Selection of the method to appraise and compare health systems using risk stratification: the ASSEHS approach

To face the challenge of active and healthy ageing, European Health Systems and services should move towards proactive, anticipatory and integrated care. The comparison of methods to combine results across studies and to determine an overall effect was undertaken by the EU project ASSEHS (Activation of Stratification Strategies and Results of the interventions on frail patients of Healthcare Services, EU project (No. 2013 12 04). The questions raised in ASSEHS are broad and involve a complex body of literature. Thus, systematic reviews are not appropriate. The most appropriate method appears to be scoping studies. In this paper, an updated method of scoping studies has been used to determine the questions needed to appraise the health systems and services for frailty in the ageing population. Three objectives were set (i) to detect a relevant number of risk stratification tools for frailty and identify the best-in-class, (ii) to understand the feasibility of introducing stratification tools and identify the difficulties of the process and (iii) to find evidence on the impact of risk stratification in Health Services. This novel approach may provide greater clarity about scoping study methodology and help enhance the methodological rigor with which authors undertake and report scoping studies.

Can Chemical Mouthwash Agents Achieve Plaque/Gingivitis Control?

Also note that structured abstracts are not allowed per journal style: What is the effect of a mouthwash containing various active chemical ingredients on plaque control and managing gingivitis in adults based on evidence gathered from existing systematic reviews? The summarized evidence suggests that mouthwashes containing chlorhexidine(CHX) and essential oils (EO) had a large effect supported by a strong body of evidence. Also there was strong evidence for a moderate effect of cetylpyridinium chloride(CPC). Evidence suggests that a CHX mouthwash is the first choice, the most reliable alternative is EO. No difference between CHX and EO with respect to gingivitis was observed.

The association of health literacy with adherence in older adults, and its role in interventions: a systematic meta-review

Background

Low health literacy is a common problem among older adults. It is often suggested to be associated with poor adherence. This suggested association implies a need for effective adherence interventions in low health literate people. However, previous reviews show mixed results on the association between low health literacy and poor adherence. A systematic meta-review of systematic reviews was conducted to study the association between health literacy and adherence in adults above the age of 50. Evidence for the effectiveness of adherence interventions among adults in this age group with low health literacy was also explored.

Methods

Eight electronic databases (MEDLINE, ERIC, EMBASE, PsycINFO, CINAHL, DARE, the Cochrane Library, and Web of Knowledge) were searched using a variety of keywords regarding health literacy and adherence. Additionally, references of identified articles were checked. Systematic reviews were included if they assessed the association between health literacy and adherence or evaluated the effectiveness of interventions to improve adherence in older adults with low health literacy. The AMSTAR tool was used to assess the quality of the included reviews. The selection procedure, data-extraction, and quality assessment were performed by two independent reviewers. Seventeen reviews were selected for inclusion.

Results

Reviews varied widely in quality. Both reviews of high and low quality found only weak or mixed associations between health literacy and adherence among older adults. Reviews report on seven studies that assess the effectiveness of adherence interventions among low health literate older adults. The results suggest that some adherence interventions are effective for this group. The interventions described in the reviews focused mainly on education and on lowering the health literacy demands of adherence instructions. No conclusions could be drawn about which type of intervention could be most beneficial for this population.

Conclusions

Evidence on the association between health literacy and adherence in older adults is relatively weak. Adherence interventions are potentially effective for the vulnerable population of older adults with low levels of health literacy, but the evidence on this topic is limited. Further research is needed on the association between health literacy and general health behavior, and on the effectiveness of interventions.

Electronic supplementary material

The online version of this article (doi:10.1186/s12889-015-2251-y) contains supplementary material, which is available to authorized users.

Implementing strategies in consumer and community engagement in health care: results of a large-scale, scoping meta-review

BACKGROUND

There is growing recognition of the importance of the active involvement of consumers and community members in health care. Despite the long history of consumer and community engagement (CCE) research and practice, there is no consensus on the best strategies for CCE. In this paper, we identify various dimensions of CCE-related strategies and offer a practical model to assist policy-makers, practitioners and researchers.

METHODS

We undertook a large-scale, scoping meta-review and searched six databases using a list of nine medical subject headings (MeSH) and a comprehensive list of 47 phrases. We identified and examined a total of 90 relevant systematic reviews.

RESULTS

Identified reviews show that although there is a significant body of research on CCE, the development of the field is hindered by a lack of evidence relating to specific elements of CCE. They also indicate a diverse and growing enterprise, drawing on a wide range of disciplinary, political and philosophical perspectives and a mix of definitions, targets, approaches, strategies and mechanisms. CCE interventions and strategies aim to involve consumers, community members and the public in general, as well as specific sub-groups, including children and people from culturally and linguistically diverse backgrounds. Strategies for CCE vary in terms of their aim and type of proposed activity, as do the methods and tools which have been developed to support them. Methods and tools include shared decision making, use of decision aids, consumer representation, application of electronic and internet-based facilities, and peer support. The success of CCE is dependent on both the approach taken and contextual factors, including structural facilitators such as governmental support, as well as barriers such as costs, organisational culture and population-specific limitations.

CONCLUSIONS

The diversity of the field indicates the need to measure each component of CCE. This meta-review provides the basis for development of a new eight stage model of consumer and community engagement. This model emphasises the importance of clarity and focus, as well as an extensive evaluation of contextual factors within specific settings, before the implementation of CCE strategies, enabling those involved in CCE to determine potential facilitators and barriers to the process.