Meta-analyses of Theory Use in Medication Adherence Intervention Research

Design and implementation of a risk-adapted, longitudinal, theory-driven medication adherence intervention: A protocol for a multi-phasic, hybrid effectiveness-implementation trial

BACKGROUND

The increasing use of targeted oral anticancer agents (OAAs) has transformed cancer treatment, yet patient adherence in real-world settings remains suboptimal. This protocol outlines a multi-phasic, hybrid effectiveness-implementation trial designed to develop, implement, and evaluate a risk-adapted, longitudinal medication adherence intervention for patients prescribed OAAs.

METHODS

Drawing on social cognitive theory, intervention mapping, and implementation science, the study aims to address barriers at cognitive, behavioral, and environmental levels that impact adherence. Phase 1 identifies implementation barriers and refines strategies, informed by expert input and semi-structured interviews. Phase 2 incorporates patient-centered feedback to tailor a theory-driven intervention targeting adherence barriers. In Phase 3, the intervention is piloted across diverse clinical settings to assess its effectiveness and implementation feasibility.

CONCLUSION

This trial aims to deliver a scalable and sustainable model for adherence support, with broad implications for improving patient outcomes and integrating adherence monitoring in routine cancer care.

Relationship Between Depression and Medication Adherence in Older Patients With Cardiovascular Disease: A Systematic Review and Meta-Analysis

Background

Depression and cardiovascular disease (CVD) by the end of 2030 will be among the major causes of disability worldwide. Meanwhile, medication adherence is an important factor in predicting clinical outcomes in patients with CVD. Further, lack of medication compliance is affected by depression. Thus, this study aimed to explore the relationship between depression and medication adherence among older patients with CVD.

Materials and Methods

The search was done across eight databases of PubMed/MEDLINE, Google Scholar, Embase, Scopus, APA Psycinfo, CINAHL/ebsco, ProQuest, and Web of Science. For the selection of included studies, there were no constraints regarding publication language. All studies available in each of the databases were searched up to December 9, 2021. Risk of bias assessment was done based on the Joanna Briggs Institute scale. The final result was estimated using a random effects model. The data were analyzed by CMA 2 software.

Results

Seven studies and 10,153 elderly suffering from CVD were identified. Most included studies had reported an inverse association between depression and medication adherence. There was a small effect between depression and medication adherence among these older patients (combined odds ratio 0.603, 95% confidence interval 0.252-1.442). Thus, having depression would reduce medication adherence by 40%.

Conclusion

Depression has a considerable effect on medication adherence among older patients with CVD. Thus, it is suggested that considering the importance of depression and lack of medication adherence in increasing the negative outcomes of this disease in these patients, primary studies be conducted in this regard to achieve conclusive results in subsequent systematic reviews and meta-analyses.

Adherence to Oral Anticancer Agents Among Adults With Gastrointestinal Tract Cancer: A Scoping Review

BACKGROUND

Patients with gastrointestinal tract cancer reported suboptimal adherence to oral anticancer agents (OAAs), reducing their therapeutic benefit and increasing mortality risk. A scoping review can comprehensively map available evidence on adherence to OAAs and inform appropriate support to improve treatment outcomes.

OBJECTIVE

The aim of this study was to comprehensively map studies on adherence to OAAs among adults with gastrointestinal tract cancer, including the adherence rate, nonadherence reasons, influential factors, management strategies, and theories that guide these studies.

METHODS

The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews Checklist and the 5-stage methodological framework of scoping review were followed. According to the 5 research questions, 7 databases were systematically searched for peer-reviewed original studies, and a narrative synthesis was performed.

RESULTS

Fifty-two studies were included. Adherence ranged from 16.7% to 100%, giving a median rate of 68% by self-report. Seven categories of nonadherence reasons were identified, with adverse effects, cancer progression, patient refusal, and forgetfulness being most frequently reported. Furthermore, more than 40 influential factors were identified. They are related to patient, disease condition, therapy, socioeconomic, and healthcare-system dimensions. Education and follow-up care were the main components of management strategies, but the effectiveness was inconsistent. Currently, only 3 of 52 studies adopted theoretical frameworks.

CONCLUSION

Adherence to OAAs among adults with gastrointestinal tract cancer is suboptimal. Future studies with rigorous designs and theoretical frameworks are needed to develop adherence-enhancing strategies and explain theoretical mechanisms.

IMPLICATIONS FOR PRACTICE

Routine assessments and preventive actions are suggested to delay modifiable nonadherence.

Associations of stigma, loneliness, and treatment self-regulation with HIV medication adherence among individuals with substance use disorder using a mobile health application

Introduction

Medication adherence contributes to poor HIV outcomes, especially among people with HIV and Substance use disorder (SUD). Mobile health applications have been leveraged to improve behavioral health outcomes among this population. Our cross-sectional study examined the relationship between medication adherence with factors such as treatment self-regulation, isolation, and internalized stigma, among people with HIV and SUD using the Addiction Comprehensive Health Enhancement Support System (A-CHESS) mobile app.

Methods

A sample of 208 participants using A-CHESS to improve treatment adherence completed a survey. Adherence was measured using the Four-item Morisky Medication Adherence Scale and dichotomized (maximum score of 20 points considered as adherent). Positive and negative affect was measured separately using Positive Affect Negative Affect Schedule and loneliness was measured using UCLA three-item Loneliness Scale. Internalized stigma was measured using Internalized AIDS-Related Stigma Scale. Competence/Treatment self-regulation was measured using Treatment Self-regulation Questionnaire. Multivariable logistic regression was used to assess the associations of affect, treatment self-regulation, isolation, and internalized stigma, with adherence to antiretroviral therapy adjusting for age, education, and gender.

Results

Among 208 participants in this study, most were Black (n = 137; 66%), male (n = 156; 75%) and had a mean age of 46 (standard deviation = 11.3). The most reported substances associated with missing HIV medication were alcohol (27%) and cocaine/crack (20%). Logistic regression analysis revealed that internalized stigma was significantly associated with HIV medication adherence (OR = 0.82; 95% CI: 0.70-0.99; p = 0.034).

Conclusion

Internalized stigma was significantly associated with HIV medication adherence. Further research is needed to better understand this relationship and develop interventions addressing stigma in people with HIV and SUD.

The impact of non-pharmacological interventions on adherence to medication and persistence in dyslipidaemia and hypertension: a systematic review

INTRODUCTION

Suboptimal medication adherence is common among patients with cardiovascular diseases. We sought evidence on non-pharmacological interventions used to support adherence for patients with hypertension and/or dyslipidemia.

METHODS

We searched MEDLINE, EMBASE, MEDLINE In-Process, ClinicalTrials.gov, EUCTR, and conference proceedings from July 2011 to July 2021 to identify trials evaluating effects of health education, phone reminders, or digital interventions on medication adherence or persistence of adult patients with hypertension and/or dyslipidemia. Risk of bias was assessed using the Cochrane Risk of Bias Assessment Tool v2.

RESULTS

Of 64 studies, 62 used health education approaches (e.g. educational interviews, motivational meetings, advice from physicians, and mobile health content), 16 phone reminders (e.g. text reminders, electronic pill-box linked reminders, bi-directional text messaging), and 10 digital applications as interventions (e.g., various self-management applications). All studies assessed medication adherence; only two persistence. Overall, 30 studies (83%) assessing health education approaches alone and 25 (78%) combined with other strategies, 12 (75%) phone reminders and eight studies (80%) digital applications combined with other strategies reported improved medication adherence. Two studies assessing health education approaches reported improved persistence.

CONCLUSIONS

Our findings indicate non-pharmacological interventions may positively impact adherence. Therefore, 'beyond the pill' approaches could play a role in preventing cardiovascular diseases.

Nonadherence to antiseizure medications: what have we learned and what can be done next?

INTRODUCTION

Nonadherence to antiseizure medications (ASMs) is associated with increased mortality, morbidity, health care utilization, and costs.

AREAS COVERED

This article reviewed 18 randomized controlled trials published between Jan 2010 and Feb 2024 on Medication Adherence Enhancing Intervention (MAEI) for people with epilepsy. The adequacy of reporting intervention development process was assessed using the GUIDance for the rEporting of intervention Development (GUIDED). The adequacy of the intervention description was assessed using the Template for Intervention Description and Replication (TIDieR) checklist. The interventions were categorized as educational (n = 7), behavioral (n = 5), or mixed (n = 6). The impact of MAEIs on adherence is mixed with majority of studies either reporting no difference between intervention and control groups (n = 6) or improvement in the intervention group (n = 7). The shortcomings in the reporting of MAEIs development, MAEIs description, and MAEIs impact measurement were discussed.

EXPERT OPINION

Future research needs to accomplish the following tasks: 1) develop and test valid epilepsy-specific self-report measures for assessing adherence; 2) optimize intervention design; and 3) increase transparency in reporting all stages of research.

Personalized Intervention to Improve Medication Adherence for Persons with Multiple Sclerosis

Purpose

To evaluate the acceptability, retention, and efficacy of face-to-face intervention, incorporating education and Motivational Interviewing (MI) to support persons with relapsing-remitting multiple sclerosis (PwRRMS) and increase self-reported medication adherence.

Patients and Methods

PwRRMS (N = 60) prescribed Disease Modifying Treatment (DMT), who were identified as non-adherent and consented to participate in an intervention, received verbal education and counseling from their treating physician, a tailored MI counseling and a booster session via telephone with a health psychologist, and a concluding MI counseling six months later. Each PwRRMS filled a battery of patient-reported outcomes (PROs) at baseline, six and 12 months later. The design was a quasi-experimental pre-test post-test across a year.

Results

Of the sixty identified persons who consented to enroll, 52 completed the intervention and 46 completed the follow-up. At six months following the baseline, adherence scores increased (median = 12.0) and were significantly different than at baseline (median=10.0, p = 0.030). Still, at 12 months follow-up there was no significant difference from baseline in reported adherence (median = 11.0, p = 0.106).

Conclusion

This study demonstrated reasonable retention and initial efficacy of a combined psycho-education and MI protocol for PwRRMS to enhance medication adherence to DMT. To maintain the change, a more sustained intervention is required.

Effect of a Medication Adherence Mobile Phone App on Medically Underserved Patients with Chronic Illness: Preliminary Efficacy Study

BACKGROUND

Medication adherence is vital in the treatment of patients with chronic illness who require long-term medication therapies to maintain optimal health. Medication adherence, a complex and widespread problem, has been difficult to solve. Additionally, lower-income, medically underserved communities have been found to have higher rates of inadequate adherence to oral medications. Even so, this population has been underrepresented in studies using mobile medication adherence app interventions. Federally qualified health centers provide care for medically underserved populations, defined as communities and populations where there is a demonstrable unmet need for health services. These centers have been reporting an increase in a more complex chronic disease population. Including medically underserved individuals in mobile health studies provides opportunities to support this disproportionately affected group, work toward reducing health disparities in access to health care, and understand barriers to mobile health uptake.

OBJECTIVE

The aim of this preliminary efficacy study was to evaluate the effects and feasibility of a commercially available medication adherence app, Medisafe, in a medically underserved adult population with various chronic illnesses seeking care in a federally qualified health center.

METHODS

Participants in this single-arm pre-post intervention preliminary efficacy study (N=10) completed a baseline survey, used the app for 2 weeks, and completed an end-of-study survey. The primary outcome measures were medication adherence and medication self-efficacy. Feedback on the use of the app was also gathered.

RESULTS

A statistically significant median increase of 8 points on the self-efficacy for adherence to medications scale was observed (P=.03, Cohen d=0.69). Though not significant, the adherence to refills and medications scale demonstrated a median change of 2.5 points in the direction of increased medication adherence (P=.21, Cohen d=0.41). Feedback about the app was positive.

CONCLUSIONS

Use of the Medisafe app is a viable option to improve medication self-efficacy and medication adherence in medically underserved patients in an outpatient setting with a variety of chronic illnesses.

Using an Intervention Mapping Approach to Improve Adherence to Disease-Modifying Treatment in Multiple Sclerosis

BACKGROUND

Up to 50% of individuals with multiple sclerosis (MS) who are prescribed disease-modifying treatments (DMTs) do not take them as advised. Although many studies report on DMT adherence rate, few studies report on interventions involving individuals with MS. The current paper describes the development of an intervention aimed at improving adherence to DMTs among identified nonadherent individuals with MS.

METHODS

An intervention was developed using an Intervention Mapping approach, recommendations from reviews on medication adherence, and input from individuals with MS. Its content was determined by theories of health behavior (specifically, a perceptions and practicalities approach), empirical evidence collected among the specific target population (an observational "needs assessment" stage [n = 186]), and other studies.

RESULTS

A personalized intervention was tailored to the reasons for nonadherence, uncovered during the observational needs assessment stage, to be delivered sequentially by a neurologist and a psychologist. After the intervention objectives were identified, components of the intervention were set: psychoeducation and ways of coping with adverse effects; modification of unhelpful treatment beliefs (such modifications were found predictive of adherence in the observational phase of the study); improving confidence and self-efficacy; and developing strategies for remembering to take DMTs. These components were embedded within motivational interviewing.

CONCLUSIONS

Intervention Mapping was useful in developing an intervention grounded both in the theoretical approach of perceptions and practicalities and in empirical evidence from the literature and the target sample; concurrently, identifying determinants that the intervention did not address. The effectiveness of the intervention-which could potentially improve adherence among individuals with MS-needs to be examined.

Medication nonadherence: health impact, prevalence, correlates and interventions

Nonadherence to medicines is a global problem compromising health and economic outcomes for individuals and society. This article outlines how adherence is defined and measured, and examines the impact, prevalence and determinants of nonadherence. It also discusses how a psychosocial perspective can inform the development of interventions to optimise adherence and presents a series of recommendations for future research to overcome common limitations associated with the medication nonadherence literature. Nonadherence is best understood in terms of the interactions between an individual and a specific disease/treatment, within a social and environmental context. Adherence is a product of motivation and ability. Motivation comprises conscious decision-making processes but also from more 'instinctive', intuitive and habitual processes. Ability comprises the physical and psychological skills needed to adhere. Both motivation and ability are influenced by environmental and social factors which influence the opportunity to adhere as well as triggers or cues to actions which may be internal (e.g. experiencing symptoms) or external (e.g. receiving a reminder). Systematic reviews of adherence interventions show that effective solutions are elusive, partly because few have a strong theoretical basis. Adherence support targeted at the level of individuals will be more effective if it is tailored to address the specific perceptions (e.g. beliefs about illness and treatment) and practicalities (e.g. capability and resources) influencing individuals' motivation and ability to adhere.

Does an eHealth Intervention Reduce Complications and Healthcare Resources? A mHeart Single-Center Randomized-Controlled Trial

(1) Background: In the mHeart trial, we showed that an eHealth intervention, mHeart, improved heart transplant (HTx) recipients' adherence to immunosuppressive therapy compared with the standard of care. Herein, we present the analysis assessing whether mHeart reduces complication frequency and healthcare resource use, and whether this reduction depends on patients' adherence. (2) Methods: The mHeart was a single-center randomized-controlled trial (IIBSP-MHE-2014-55) in 134 adult HTx recipients (n = 71 intervention; n = 63 controls). The endpoints were mortality, complications, and resource use during follow-up (mean 1.6 ± 0.6 years). (3) Results: A significantly lower proportion of HTx recipients in mHeart had echocardiographic alteration (2.8% vs. 13.8%; p = 0.02), cardiovascular events (0.35% vs. 2.4%; p = 0.006), infections (17.2% vs. 56%; p = 0.03), and uncontrolled Hba1c (40.8% vs. 59.6%; p = 0.03) than controls. In addition, a significantly lower proportion of patients in the intervention needed hospital (32.4% vs. 56.9%; p = 0.004) or urgent admissions (16.9% vs. 41.4%; p = 0.002) and emergency room visits (50.7% vs. 69.0%; p = 0.03). Adherence status (measured by the self-reported SMAQ) influenced only controls regarding hospitalizations and emergency room visits. Differences were not significant on deaths (intervention 4.2% vs. control 9.5%; p = 0.4) (4) Conclusions: the mHeart strategy significantly reduced the occurrence of the studied post-transplant complications and the need for medical attention in HTx recipients. Adherence status influenced controls in their need for medical care.

Association of Adherence to Endocrine Therapy Among Patients With Breast Cancer and Potential Drug-Drug Interactions

IMPORTANCE

Suboptimal adherence to endocrine therapy (ET) among patients with hormone-receptor-positive breast cancer significantly affects survival outcomes and is associated with higher hospitalization rates and health care costs. Weak adherence to long-term treatments has multiple determinants, including disease characteristics, treatment adverse effects, and patients' attributes, such as age and comorbidities.

OBJECTIVE

To examine whether potential drug-drug interactions (PDDI) with tamoxifen or aromatase inhibitor were associated with adherence to ET in patients with early and advanced breast cancer.

DESIGN, SETTING, AND PARTICIPANTS

This cohort study used anonymized health record data of women with breast cancer who received ET in a private observational primary care database. Patients eligible for analysis included women aged 18 years or older who had a reported diagnosis of breast cancer and received ET with tamoxifen or aromatase inhibitor between 1994 and 2021. Data were analyzed 2021.

EXPOSURES

Adherence to ET during a given year was defined by a medication possession ratio of 80% or greater over 1-year prescription periods. PDDI were categorized into absent, minor (a combination to take into account), moderate (combination requiring precautions for use), major (combination not recommended), and contraindicated according to guidelines in the Claude Bernard Drug Database.

MAIN OUTCOMES AND MEASURES

We used regression models to estimate odds ratios (ORs) and 95% CIs for the associations between adherence and age, baseline comorbidities, PDDI, and adherence to ET during the previous year.

RESULTS

A total of 10 863 patients who were prescribed ET for breast cancer were eligible for the analysis (age 70 years or older, 3509 patients [32.3%]). In the tamoxifen cohort (3564 patients), PDDI were reported in 497 of 3670 patients (13.5%) at baseline (moderate, 254 patients [51.1%]; major, 227 patients [45.7%]), 2047 of 4831 patients (42.4%) at year 1, 1127 of 2751 patients (41.0%) at year 2, 761 of 1861 patients (40.9%) at year 3, 376 of 1058 patients (35.5%) at year 4, and 201 of 593 patients (33.9%) at year 5. In the aromatase inhibitor cohort (7299 patients), PDDI were reported in 592 of 7437 patients (8.0%) at baseline (moderate in 588 of 592 patients [99.3%]), which reached 2875 of 9031 patients (31.8%) at year 1 and ranged between 31.4% (1802 of 5730 patients in year 2) and 32.8% (791 of 2411 in year 4) throughout the study period. No association between adherence and PDDI was found in the tamoxifen (OR, 0.99; 95% CI, 0.91-1.08) or aromatase inhibitor (OR, 1.05; 95% CI, 0.95-1.15) cohort.

CONCLUSIONS AND RELEVANCE

In this cohort of patients with hormone-receptor-positive breast cancer, PDDI with tamoxifen and aromatase inhibitors were not associated with adherence to ET.

ESMO Expert Consensus Statements on Cancer Survivorship: promoting high-quality survivorship care and research in Europe

BACKGROUND

The increased number of cancer survivors and the recognition of physical and psychosocial challenges, present from cancer diagnosis through active treatment and beyond, led to the discipline of cancer survivorship.

DESIGN AND METHODS

Herein, we reflected on the different components of survivorship care, existing models and priorities, in order to facilitate the promotion of high-quality European survivorship care and research.

RESULTS

We identified five main components of survivorship care: (i) physical effects of cancer and chronic medical conditions; (ii) psychological effects of cancer; (iii) social, work and financial effects of cancer; (iv) surveillance for recurrences and second cancers; and (v) cancer prevention and overall health and well-being promotion. Survivorship care can be delivered by structured care models including but not limited to shared models integrating primary care and oncology services. The choice of the care model to be implemented has to be adapted to local realities. High-quality care should be expedited by the generation of: (i) focused and shared European recommendations, (ii) creation of tools to facilitate implementation of coordinated care and (iii) survivorship educational programs for health care teams and patients. The research agenda should be defined with the participation of health care providers, researchers, policy makers, patients and caregivers. The following patient-centered survivorship research areas were highlighted: (i) generation of a big data platform to collect long-term real-world data in survivors and healthy controls to (a) understand the resources, needs and preferences of patients with cancer, and (b) understand biological determinants of survivorship issues, and (ii) develop innovative effective interventions focused on the main components of survivorship care.

CONCLUSIONS

The European Society for Medical Oncology (ESMO) can actively contribute in the efforts of the oncology community toward (a) promoting the development of high-quality survivorship care programs, (b) providing educational material and (c) aiding groundbreaking research by reflecting on priorities and by supporting research networking.

Using the COM-B model to characterize the barriers and facilitators of pre-exposure prophylaxis (PrEP) uptake in men who have sex with men

OBJECTIVES

Using the COM-B model, this study aimed to characterize barriers and facilitators to pre-exposure prophylaxis (PrEP) uptake amongst men who have sex with men (MSM).

DESIGN AND METHOD

Semistructured interviews with 13 MSM who were non-PrEP users were conducted with a specific focus on barriers and facilitators to PrEP uptake. A 15-item interview schedule was created informed by the COM-B model. Transcripts were transcribed verbatim and inductively analysed using thematic analysis. To illustrate pathways for intervention design, inductive themes were then deductively mapped onto COM-B constructs.

RESULTS

Results demonstrated that barriers to PrEP uptake were closely aligned with five (of six) COM-B components: psychological capability, physical opportunity, social opportunity, reflective motivation and automatic motivation. These COM-B subcomponents reflected seven thematized barriers: (1) limited information about PrEP, (2) restricted access to PrEP, (3) gay identity and sexual stigmatization, (4) social and cultural stigmatization, (5) capabilities in treatment adherence, (6) optimistic bias about sexual behaviours and (7) calculating risk. No facilitators or physical capability concerns were demonstrated.

CONCLUSION

This study adopted a novel behaviour change-informed approach to understanding barriers and facilitators to PrEP uptake amongst MSM. Unrealistic optimism about self-protective individual behaviours, the physical accessibility of PrEP and (mis)information together interacted closely with perceptions of personal and social stigmatization to dynamically impact PrEP uptake decisions. Barriers to PrEP uptake mapped clearly to the COM-B; therefore, these results provide the foundation for Behaviour Change Wheel intervention development to improve rates of PrEP uptake and its acceptability for MSM.

Investigation of Intervention Solutions to Enhance Adherence to Oral Anticancer Medicines in Adults: Overview of Reviews

BACKGROUND

Adherence to anticancer medicines is critical for the success of cancer treatments; however, nonadherence remains challenging, and there is limited evidence of interventions to improve adherence to medicines in patients with cancer.

OBJECTIVE

This overview of reviews aimed to identify and summarize available reviews of interventions to improve adherence to oral anticancer medicines in adult cancer survivors.

METHODS

A comprehensive search of 7 electronic databases was conducted by 2 reviewers who independently conducted the study selection, quality assessment using the A Measurement Tool to Assess Systematic Reviews 2, and data extraction. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 2020 checklist was adapted to report the results.

RESULTS

A total of 29 reviews were included in the narrative synthesis. The overall quality of the systematic reviews was low. The 4 main strategies to promote adherence were focused on education, reminders, behavior and monitoring, and multicomponent approaches. Digital technology-based interventions were reported in most reviews (27/29, 93%). A few interventions applied theories (10/29, 34%), design frameworks (2/29, 7%), or engaged stakeholders (1/29, 3%) in the development processes. The effectiveness of interventions was inconsistent between and within reviews. However, interventions using multiple strategies to promote adherence were more likely to be effective than single-strategy interventions (12/29, 41% reviews). Unidirectional communication (7/29, 24% reviews) and technology alone (11/29, 38% reviews) were not sufficient to demonstrate improvement in adherence outcomes. Nurses and pharmacists played a critical role in promoting patient adherence to oral cancer therapies, especially with the support of digital technologies (7/29, 24% reviews).

CONCLUSIONS

Multicomponent interventions are potentially effective in promoting patient adherence to oral anticancer medicines. The seamless integration of digital solutions with direct clinical contacts is likely to be effective in promoting adherence. Future research for developing comprehensive digital adherence interventions should be evidence-based, theory-based, and rigorously evaluated.

Predicting population: development and validation of a new predictive nomogram for evaluating medication nonadherence risk in a type 2 diabetes

Background

Diabetes mellitus is a growing global health challenge and affects patients of all ages. Treatment aims to keep blood glucose levels close to normal and to prevent or delay complications. However, adherence to antidiabetic medicines is often unsatisfactory.

Purpose

Here, we established and internally validated a medication nonadherence risk nomogram for use in Chinese type 2 diabetes mellitus (T2DM) patients.

Methods

This cross-sectional study was carried out from July-December 2020 on randomly selected T2DM patients visiting a diabetes clinic and included 753 participants. Adherence was analyzed based on an eight-item Morisky Medication Adherence Scale (MMAS-8). Other data, including patient demographics, treatment, complications, and comorbidities, were also collected on questionnaires. Optimization of feature selection to develop the medication nonadherence risk model was achieved using the least absolute shrinkage and selection operator regression model (LASSO). A prediction model comprising features selected from LASSO model was designed by applying multivariable logistic regression analysis. The decision curve analysis, calibration plot, and C-index were utilized to assess the performance of the model in terms of discrimination, calibration, and clinical usefulness. Bootstrapping validation was applied for internal validation.

Results

The prediction nomogram comprised several factors including sex, marital status, education level, employment, distance, self-monitoringofbloodglucose, disease duration, and dosing frequency of daily hypoglycemics (pills, insulin, or glucagon-like peptide-1). The model exhibited good calibration and good discrimination (C-index = 0.79, 95% CI [0.75-0.83]). In the validation samples, a high C-index (0.75) was achieved. Results of the decision curve analysis revealed that the nonadherence nomogram could be applied in clinical practice in cases where the intervention is decided at a nonadherence possibility threshold of 12%.

Conclusion

The number of patients who adhere to anti-diabetes therapy was small. Being single male, having no formal education, employed, far from hospital, long disease duration, and taking antidiabetics twice or thrice daily, had significant negative correlation with medication adherence. Thus, strategies for improving adherence are urgently needed.

A conceptual model of alcohol use and adherence to antiretroviral therapy: systematic review and theoretical implications for mechanisms of action

Alcohol consumption is one of the most prevalent correlates of antiretroviral therapy (ART) adherence, yet causal processes underlying this association remain largely unexplored. The goal of this systematic review was to develop a conceptual model that describes the causal effect of alcohol consumption on ART nonadherence. We reviewed 230 studies that examined the association between alcohol consumption and ART adherence with three primary aims: (1) to replicate and extend previous reviews of the literature, (2) to summarize and critique study designs capable of answering questions about temporal overlap and (3) to summarize potential mechanisms of action. A model of alcohol-associated ART nonadherence was proposed to guide future work, integrating general theories of ART adherence and theory on the psychological and behavioral effects of alcohol intoxication. The conceptual model describes two mechanistic processes-prospective memory impairment and interactive toxicity beliefs/avoidance behaviors-involved in alcohol-associated intentional and unintentional nonadherence, respectively. This model can be used to guide future research on the causal processes involved in the frequently observed correlation between alcohol consumption and adherence.

Efficacy and Safety of Chinese Herbal Medicine Compared With Losartan for Mild Essential Hypertension: A Randomized, Multicenter, Double-Blind, Noninferiority Trial

BACKGROUND

Hypertension is one of the most challenging public health problems worldwide. Previous studies suggested that the Songling Xuemaikang capsule (SXC)-a Chinese herbal formula-was effective for essential hypertension. However, the efficacy of SXC monotherapy for hypertension remains unclear. We aimed to compare the blood pressure (BP)-lowering efficacy and safety of SXC versus losartan in patients with essential hypertension.

METHODS

In this multicenter, randomized, double-blind, noninferiority trial in China, patients 18 to 65 years of age with mild essential hypertension were randomly allocated to receive either SXC or losartan for 8 weeks. The primary outcome was the change in sitting diastolic BP from baseline to 8 weeks, with a predefined noninferiority margin of -2.5 mm Hg.

RESULTS

Of the 755 patients who entered a 2-week run-in period, 628 patients (327 women and 301 men; mean [SD] age, 52.6 [9.2] years) were randomly assigned to the SXC (n=314) or losartan (n=314) group. The primary analysis based on the intention-to-treat principle showed that the change in diastolic BP from baseline to 8 weeks was similar between the SXC and losartan groups (-7.9 [8.0] versus -8.1 [7.9]). The lower boundary of 95% CI (mean difference, -0.24 [95% CI, -1.51 to 1.03]) was above the margin of -2.5 mm Hg, showing noninferiority. Results were consistent with per-protocol analysis. SXC produced greater improvements in total hypertension symptom score (-5.7 [4.2] versus -5.0 [4.0]; P=0.020) and total cholesterol (-0.1 [1.0] versus 0.1 [1.2]; P=0.025). There were no differences between groups in the other BP and patient-reported outcomes. Incidence and severity of adverse events were similar between groups.

CONCLUSIONS

SXC was well tolerated and demonstrated noninferior to losartan in BP lowering in patients with mild hypertension. SXC might be an alternative for mild hypertension, particularly for patients with a preference for natural medicine.

REGISTRATION

URL: www.chictr.org.cn; Unique identifier: ChiCTR-IPR-16008108.

Effectiveness of a medication adherence management intervention in a community pharmacy setting: a cluster randomised controlled trial

BACKGROUND

Non-adherence to medications continues to be a burden worldwide, with significant negative consequences. Community pharmacist interventions seem to be effective at improving medication adherence. However, more evidence is needed regarding their impact on disease-specific outcomes. The aim was to evaluate the impact of a community pharmacist-led adherence management intervention on adherence and clinical outcomes in patients with hypertension, asthma and chronic obstructive pulmonary disease (COPD).

METHODS

A 6-month cluster randomised controlled trial was conducted in Spanish community pharmacies. Patients suffering from hypertension, asthma and COPD were recruited. Patients in the intervention group received a medication adherence management intervention and the control group received usual care. The intervention was based on theoretical frameworks for changing patient behaviour. Medication adherence, disease-specific outcomes (Asthma Control Questionnaire (ACQ) scores, Clinical COPD Questionnaire (CCQ) scores and blood pressure levels) and disease control were evaluated. A multilevel regression model was used to analyse the data.

RESULTS

Ninety-eight pharmacies and 1186 patients were recruited, with 1038 patients completing the study. Patients receiving the intervention had an OR of 5.12 (95% CI 3.20 to 8.20, p<0.05) of being adherent after the 6 months. At the end of the study, patients in the intervention group had lower diastolic blood pressure levels (mean difference (MD) -2.88, 95% CI -5.33 to -0.43, p=0.02), lower CCQ scores (MD -0.50, 95% CI -0.82 to -0.18, p<0.05) and lower ACQ scores (MD -0.28, 95% CI -0.56 to 0.00, p<0.05) when compared with the control group.

CONCLUSIONS

A community pharmacist-led medication adherence intervention was effective at improving medication adherence and clinical outcomes in patients suffering from hypertension, asthma and COPD. Future research should explore the implementation of these interventions in routine practice.

TRIAL REGISTRATION NUMBER

ACTRN12618000410257.

Integration of a smart multidose blister package for medication intake: A mixed method ethnographic informed study of older adults with chronic diseases

Smart adherence products are marketed to assist with medication management. However, little is known about their in-home integration by older adults. It is necessary to investigate the facilitators and barriers older adults face when integrating these products into their medication taking routines before effectiveness can be examined. The aim of this study was to (a) examine the integration of a smart multidose blister package and (b) understand medication intake behaviour of adults with chronic diseases using an integrated theoretical model comprised of the Technology Acceptance Model (TAM), Theory of Planned Behaviour (TPB) and Capacity, Opportunity, Motivation and Behaviour (COM-B) Model. An ethnographic-informed study was conducted with older adults using the smart multidose blister package to manage their medications for eight weeks. Data was collected quantitatively and qualitatively using in-home observations, photo-elicitation, field notes, semi-structured interviews, system usability scale (SUS) and net promoter scale (NPS). The interview guide was developed with constructs from the TAM, TPB and COM-B Model. Data were analyzed using the Qualitative Analysis Guide of Leuven (QUAGOL) framework to generate themes and sub-themes which were mapped back to TAM, TBP and COM-B Model. Ten older adults with an average age of 76 years, of which 80% were female, participated in the study. On average, participants reported five medical conditions, while the average number of medications was 11.1. The mean SUS was 75.50 and overall NPS score was 0. Qualitative analysis identified three themes; (1) factors influencing medication intake behaviour (2) facilitators to the product use and, (3) barriers to the product use. The smart blister package was found to be easy to use and acceptable by older adults. Clinicians should assess an older adult’s medication intake behavior as well as barriers and facilitators to product use prior to recommending an adherence product for managing medications.

A qualitative analysis of nicotine replacement therapy uptake, consistent use, and persistence among primary care patients who smoke

•Adherence can be broken into three processes: uptake, consistent use, and persistence.•Barriers and facilitators to NRT use vary over the three adherence processes.•Information gaps and negative stories about NRT are common barriers to adherence.•NRT adherence may be improved by addressing patient knowledge and concerns.

'Just keep taking them, keep hoping they'll work': A qualitative study of adhering to medications for multimorbidity

OBJECTIVE

Compared to single diseases, health psychology reflects many areas of medical research by affording relatively less attention to the experiences of people self-managing multiple co-occurring conditions and, in particular, the experience of managing the associated complex medication regimens. This study aimed to explore the experience of self-managing multimorbidity among older adults, with a focus on medication adherence.

DESIGN

A qualitative approach was taken, using individual semi-structured interviews.

METHODS

Sixteen people with complex multimorbidity aged 65 years or older were recruited through general practice to take part in semi-structured interviews. Data were analysed following guidelines for reflexive thematic analysis.

RESULTS

Two themes were generated, with each theme comprising three subthemes. Theme one represents the amplified burden arising from multimorbidity that leads to unique challenges for self-management, such as integrating multiple medications into daily life, accumulating new symptoms and treatments, and managing evolving medication regimens. Theme two represents pathways towards relief that reduce this burden and promote medication adherence, such as prioritising certain conditions and treatments, resigning to the need for multiple medications, and identifying and utilising adherence supports.

CONCLUSIONS

We identified factors relevant to medication adherence for older adults with multimorbidity that go beyond single-disease influences and account for the amplified experience of chronic disease that multimorbidity can produce for some people. While evidence of single-disease influences remains fundamental to tailoring behavioural interventions to individuals, the impact of multimorbidity on medication adherence should be accounted for in research and practice.

Mobile Health to Improve Adherence and Patient Experience in Heart Transplantation Recipients: The mHeart Trial

Non-adherence after heart transplantation (HTx) is a significant problem. The main objective of this study was to evaluate if a mHealth strategy is more effective than standard care in improving adherence and patients’ experience in heart transplant recipients. Methods: This was a single-center, randomized controlled trial (RCT) in adult recipients >1.5 years post-HTx. Participants were randomized to standard care (control group) or to the mHeart Strategy (intervention group). For patients randomized to the mHeart strategy, multifaceted theory-based interventions were provided during the study period to optimize therapy management using the mHeart mobile application. Patient experience regarding their medication regimens were evaluated in a face-to-face interview. Medication adherence was assessed by performing self-reported questionnaires. A composite adherence score that included the SMAQ questionnaire, the coefficient of variation of drug levels and missing visits was also reported. Results: A total of 134 HTx recipients were randomized (intervention N = 71; control N = 63). Mean follow-up was 1.6 (SD 0.6) years. Improvement in adherence from baseline was significantly higher in the intervention group versus the control group according to the SMAQ questionnaire (85% vs. 46%, OR = 6.7 (2.9; 15.8), p-value < 0.001) and the composite score (51% vs. 23%, OR = 0.3 (0.1; 0.6), p-value = 0.001). Patients’ experiences with their drug therapy including knowledge of their medication timing intakes (p-value = 0.019) and the drug indications or uses that they remembered (p-value = 0.003) significantly improved in the intervention versus the control group. Conclusions: In our study, the mHealth-based strategy significantly improved adherence and patient beliefs regarding their medication regimens among the HTx population. The mHeart mobile application was used as a feasible tool for providing long-term, tailor-made interventions to HTx recipients to improve the goals assessed.

"You have to change your whole life": A qualitative study of the dynamics of treatment adherence among adults with tuberculosis in the United Kingdom

Maintaining adherence to treatment for tuberculosis (TB) is essential if the disease is to be eliminated. As part of formative research to develop an intervention to improve adherence, we documented the lived experiences of adults receiving anti-TB treatment (ATT) in three UK cities and examined how personal, social, and structural circumstances interacted to impact on individuals’ adherence to treatment. Using a topic guide that explored social circumstances and experiences of TB care, we conducted in-depth interviews with 18 adults (six women) who were being or had been treated for TB (patients) and four adults (all women) who were caring for a friend, relative, or partner being treated for TB (caregivers). We analysed transcripts using an adapted framework method that classified factors affecting adherence as personal, social, structural, health systems, or treatment-related. Eleven of 18 patients were born outside the UK (in South, Central, and East Asia, and Eastern and Southern Africa); among the seven who were UK-born, four were Black, Asian, or Minority Ethnic and three were White British. TB and its treatment were often disruptive: in addition to debilitating symptoms and side effects of ATT, participants faced job insecurity, unstable housing, stigma, social isolation, worsening mental health, and damaged relationships. Those who had a strong support network, stable employment, a routine that could easily be adapted, a trusting relationship with their TB team, and clear understanding of the need for treatment reported finding it easier to adhere to ATT. Changes in circumstances sometimes had dramatic effects on an individual’s ability to take ATT; participants described how the impact of certain acute events (e.g., the onset of side effects or fatigue, episodes of stigmatisation, loss of income) were amplified by their timing or through their interaction with other elements of the individual’s life. We suggest that the dynamic and fluctuating nature of these factors necessitates comprehensive and regular review of needs and potential problems, conducted before and during ATT; this, coupled with supportive measures that consider (and seek to mitigate) the influence of social and structural factors, may help improve adherence.

Perceptions of a mobile phone-based approach to promote medication adherence: A cross-sectional application of the technology acceptance model

Background

Objectives

Methods

Results

Conclusion

•

Medication adherence strategies using mobile phones are common

•

New mobile phone-based approach called caller tunes was tested for feasibility

•

Intention to use the caller tunes for enhancing medication adherence was high

•

Making caller tunes free to download increased intention to use

•

Caller tunes could be a novel strategy to promote medication adherence

Multilevel Correlates of Immunosuppressive Nonadherence in Kidney Transplant Patients: The Multicenter ADHERE BRAZIL Study

BACKGROUND

Immunosuppressive nonadherence is a risk factor for worse outcomes after kidney transplantation (KT). Brazil, having the world's largest public, fully covered transplantation system and the second-highest KT volume worldwide, provides a unique setting for studying multilevel correlates of nonadherence (patient, healthcare provider, transplant center, and healthcare system levels) independent of patients' financial burden.

METHODS

By applying a multistage sampling approach, we included 1105 patients from 20 KT centers. Nonadherence to immunosuppressives (implementation phase) was defined as any deviation in taking or timing adherence and dose reduction assessed by the Basel Assessment of Adherence to Immunosuppressive Medications Scale. Based on Bronfenbrenner's ecological model, we assessed multilevel factors using established instruments and measures specifically developed for this study and analyzed their independent contribution to nonadherence by performing sequential logistic regression analysis.

RESULTS

The nonadherence prevalence rate was 39.7%. The following factors were independently associated with nonadherence: Patient level-having a stable partner (odds ratio [OR]: 0.75; confidence interval [CI]: 0.58-0.97), nonadherence to appointments (OR: 2.98; CI: 2.03-4.39), and nonadherence to physical activity recommendations (OR: 1.84; CI: 1.38-2.46); and transplant center level-satisfaction with the waiting room structure (OR: 0.54; CI: 0.42-0.71), consultation >30 minutes (OR: 1.60; CI: 1.19-2.14), adequacy of the consultation frequency (OR: 0.62; CI: 0.43-0.90), and centers with >500 beds (OR: 0.58; CI: 0.46-0.73).

CONCLUSIONS

As the first multicenter study assessing multilevel correlates of nonadherence in KT, our findings point to the need for multilevel interventions beyond the patient level, targeting transplant center practice patterns as an approach to tackle nonadherence.

Individual interventions to improve adherence to pharmaceutical treatment, diet and physical activity among adults with primary hypertension. A systematic review protocol

INTRODUCTION

Hypertension is a chronic disease with 31% worldwide prevalence in adults. It has been associated with non-adherence to therapeutic regime with a negative impact on the prognosis of the disease and healthcare-associated costs. So, it is necessary to identify effective interventions to improve adherence among the afflicted population. The objective of this protocol is to describe the methods for a systematic review that will evaluate the effect of individual interventions so as to improve adherence to the prescribed pharmacological treatment, as well as to prescribed diet and physical activity in adults with primary hypertension.

METHODS AND ANALYSIS

A systematic search of studies will be conducted in PubMed/MEDLINE, BVS, CINAHL, Embase, Cochrane and Scopus databases. Randomised and non-randomised clinical studies conducted in human beings, published from 1 January 2009 to 13 December 2019, are to be included, in any language. Adherence to pharmacological treatment, diet and physical activity, measured by direct and indirect methods, will be the primary outcome. Two independent reviewers will select relevant studies and will extract the data following the Cochrane's Handbook for Systematic Reviews of Approach and the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Protocols. Methodological quality will be evaluated using the risk-of-bias (RoB) 2 and Risk of Bias in Non-randomised Studies - of Interventions (ROBINS-I) tools. Risk of bias will also be evaluated, and if the criteria are met, a meta-analysis will be finally performed.

ETHICS AND DISSEMINATION

Information to be analysed is of a grouped nature, and given that its sources are published studies, no ethics committee approval is required. Results will be published in scientific journals, and in conferences, seminars and symposiums. Copyrights will be addressed by giving due credit through bibliographic references.

PROSPERO REGISTRATION NUMBER

CRD42020147655.

Effectiveness of interventions for optimising adherence to treatments for the prevention and management of scars: A systematic review

OBJECTIVES

To identify the adherence interventions used with people receiving treatments to prevent or manage scarring, the effectiveness of these interventions, and the theoretical frameworks on which these interventions were based.

DATA SOURCES

Databases (PubMed, Embase, Web of Science, CINAHL, PsychINFO and OTseeker) were searched (09.10.2020) with no date or language restrictions. Grey literature databases, clinical trial registries and references lists of key papers were also searched.

REVIEW METHODS

Eligible randomised controlled trials included people using treatments for scarring following skin wounds, interventions that may improve adherence, and outcomes measuring adherence. Risk of bias (selection, performance, detection, attrition, reporting) and certainty of evidence (inconsistency, imprecision, indirectness, publication bias) were assessed.

RESULTS

Four randomised trials were included with 224 participants (17 children) with burn scars. Interventions involved educational (three trials) or technology-based components (four trials) and ranged in length from two weeks to six months. All four trials reported greater adherence rates in the intervention group compared with standard practice [standardised mean difference = 1.50 (95% confidence interval (CI) = 0.91-2.08); 2.01 (95% CI 1.05-2.98); odds ratio = 0.28 (95% CI = 0.11-0.69)]. One trial did not report original data. The certainty of evidence was very low.

CONCLUSION

Adherence interventions using education or technology for people receiving burn scar treatment may improve adherence. Further studies are needed particularly in children, with a focus on including outcomes of importance to patients (e.g. quality of life) and identifying core components of effective adherence interventions using theoretical frameworks.

Factors related to the use of magnifying low vision aids: a scoping review

Background: The decision process around the (non-)use of assistive technologies is multifactorial. Its determinants have previously been classified into personal, device-related, environmental and interventional categories. Whether these categories specifically apply to the use of magnifying low vision aids was explored here, using this classification.Methods: A scoping review (Embase, MedLine, Cochrane, ERIC ProQuest, CINAHL, NICE Evidence, Trip Database) was conducted to summarize the extent, range, and nature of research regarding the categories that are associated with low vision aid (non-)usage. A combination of key words and MeSH terms was used based upon the identified core concepts of the research question: low vision, assistive technology and adherence. Inter-rater reliability for the selection process was considered acceptable (kappa = 0.87). A combination of numerical and qualitative description of 21 studies was performed.Results: Studies report high variability rates of people possessing devices but not using them (range: 2.3-50%, M = 25%, SD = 14%). We were able to replicate the conceptual structure of the four categories that had previsouly been identified with other devices. Age, diagnosis and visual acuity demonstrated contradictory influence on optical low vision aid usage. Change in vision, appropriate environment, consistent training, patient's motivation and awareness of low vision services, emerged as contributor factors of use.Conclusion: This review provides evidence that clinicians should not rely on traditionally available clinical factors to predict device use behavior. Worsening vision and low motivation appear as predictors of device nonuse and should be considered from the clinician's point of view. Education about potential facilitating factors and promotion of innovative care are strongly encouraged.Implications for rehabilitationInvestigation of the factors predicting (non-)use of magnifying low vision aids is important. These findings can help clinicians to identify patients with a higher risk of non-use of low vision aids as well as provide evidence for interventions designed to improve use.Knowledge of low vision services and types of magnifying low vision aids available to patients appears as fundamental in the process of device use and needs to be supported by more educational programs.Psychological factors predicting (non-)use of low vision aids need to be considered in the choice of rehabilitation and follow-up strategies by a multidisciplinary team, focusing more on mechanisms of adaptation and patient's motivation.Training intensity should play a central role in the development of innovative intervention programs to reduce device abandonment.

Interdisciplinary Mobile Health Model to Improve Clinical Care After Heart Transplantation: Implementation Strategy Study

Background

Solid organ transplantation could be the only life-saving treatment for end-stage heart failure. Nevertheless, multimorbidity and polypharmacy remain major problems after heart transplant. A technology-based behavioral intervention model was established to improve clinical practice in a heart transplant outpatient setting. To support the new strategy, the mHeart app, a mobile health (mHealth) tool, was developed for use by patients and providers.

Objective

The primary objective of this study was to describe the implementation of the mHeart model and to outline the main facilitators identified when conceiving an mHealth approach. The secondary objectives were to evaluate the barriers, benefits, and willingness to use mHealth services reported by heart transplant recipients and cardiology providers.

Methods

This was an implementation strategy study directed by a multidisciplinary cardiology team conducted in four stages: design of the model and the software, development of the mHeart tool, interoperability among systems, and quality and security requirements. A mixed methods study design was applied combining a literature review, several surveys, interviews, and focus groups. The approach involved merging engineering and behavioral theory science. Participants were chronic-stage heart transplant recipients, patient associations, health providers, stakeholders, and diverse experts from the legal, data protection, and interoperability fields.

Results

An interdisciplinary and patient-centered process was applied to obtain a comprehensive care model. The heart transplant recipients (N=135) included in the study confirmed they had access to smartphones (132/135, 97.7%) and were willing to use the mHeart system (132/135, 97.7%). Based on stakeholder agreement (>75%, N=26), the major priorities identified of the mHealth approach were to improve therapy management, patient empowerment, and patient-provider interactions. Stakeholder agreement on the barriers to implementing the system was weak (<75%). Establishing the new model posed several challenges to the multidisciplinary team in charge. The main factors that needed to be overcome were ensuring data confidentiality, reducing workload, minimizing the digital divide, and increasing interoperability. Experts from various fields, scientific societies, and patient associations were essential to meet the quality requirements and the model scalability.

Conclusions

The mHeart model will be applicable in distinct clinical and research contexts, and may inspire other cardiology health providers to create innovative ways to deal with therapeutic complexity and multimorbidity through health care systems. Professionals and patients are willing to use such innovative mHealth programs. The facilitators and key strategies described were needed for success in the implementation of the new holistic theory–based mHealth strategy.

A systematic review of interventions using health behavioral theories to improve medication adherence among patients with hypertension

Medication adherence is a major problem in the treatment of hypertension. Approximately half of the patients who use antihypertensive medications are not adherent. Several interventions have endeavored to improve medication adherence among patients with hypertension, and some have used health behavioral models/theories. However, the quality and effectiveness of using health behavioral models/theories in improving medication adherence among patients with hypertension remain unknown. The main aim of this systematic review was to describe study characteristics and types of health behavioral models/theories used in interventions for improving medication adherence among adults with hypertension. PubMed, Scopus, Ovid MEDLINE, CINAHL, and PsycINFO databases were searched for randomized clinical trial interventions using any health behavioral models/theories published in English from 1979 to 2019. Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, two independent reviewers searched, screened abstracts and articles, extracted data, and assessed the risk of bias and the use of the model/theory using the Theory Coding Scheme. A total of 11 articles were included in this systematic review. Two studies reported significant improvement in medication adherence. The Self-Regulation Model and Social Cognitive Theory were the most common types of models/theories. Nine studies used a single model/theory, and four studies measured the constructs of a model/theory. Risk of bias was good (n = 4) and fair (n = 5) in interventions. Using health behavioral models/theories may be an efficient way for health care professionals to improve adherence to medications among patients with hypertension. More interventions with rigorous designs are needed that appropriately utilize health behavioral models/theories for improving medication adherence among adults with hypertension.

Theory-driven development of a medication adherence intervention delivered by eHealth and transplant team in allogeneic stem cell transplantation: the SMILe implementation science project

BACKGROUND

Medication adherence to immunosuppressants in allogeneic stem cell transplantation (alloSCT) is essential to achieve favorable clinical outcomes (e.g. control of Graft-versus-Host Disease). Over 600 apps supporting medication adherence exist, yet they lack successful implementation and sustainable use likely because of lack of end-user involvement and theoretical underpinnings in their development and insufficient attention to implementation methods to support their use in real-life settings. Medication adherence has three phases: initiation, implementation and persistence. We report the theory-driven development of an intervention module to support medication adherence (implementation and persistence phase) in alloSCT outpatients as a first step for future digitization and implementation in clinical setting within the SMILe project (Development, implementation and testing of an integrated care model in allogeneic SteM cell transplantatIon faciLitated by eHealth).

METHODS

We applied Michie's Behavior Change Wheel (BCW) and the Capability-Opportunity-Motivation and Behavior (COM-B) model using three suggested stages followed by one stage added by our team regarding preparation for digitization of the intervention: (I) Defining the problem in behavioral terms; (II) Identifying intervention options; (III) Identifying content and implementation options; (IV) SMILe Care Model Prototype Development. Scientific evidence, data from a contextual analysis and patients'/caregivers' and clinical experts' inputs were compiled to work through these steps.

RESULTS

(I) Correct immunosuppressant taking and timing were defined as target behaviors. The intervention's focus was determined within the COM-B dimensions Capability (lack of knowledge, lack of routine), Opportunity (lack of cues, interruptions in daily routine) and Motivation (lack of problem solving, trivialization). (II) Five intervention functions were chosen, i.e. education, training, modelling, persuasion and enablement. (III) Twenty-four behavior change techniques were selected, e.g., goal setting, action planning and problem solving. (IV) Finally, seventeen user stories were developed to guide the SMILeApp's software development process.

CONCLUSION

Our example on the theory-driven development of an intervention module in alloSCT delivered by eHealth and transplant team using a rigorous 3 + 1-stage approach based on BCW, COM-B and agile software development techniques, can be used as methodological guidance for other eHealth intervention developers. Our approach has the potential to enhance successful implementation and sustained use of eHealth solutions in real-life settings.

Self-reported medication adherence tools in cardiovascular disease: protocol for a systematic review of measurement properties

OBJECTIVE

The aim of this review is to identify high-quality, self-reported medication adherence tools for adults with cardiovascular disease to improve health outcomes.

INTRODUCTION

Medication adherence is a complex concept affected by multiple factors and positively associated with clinical outcomes. Poor adherence to cardiovascular medications is a hindrance to the effective management of cardiovascular disease, leading to poor disease prognosis or increased risk of death. Valid and reliable measurement is crucial to identify patients with poor adherence, preferably before an adverse outcome occurs.

INCLUSION CRITERIA

This review will consider studies that include adults, aged 18 years and over, with a diagnosis of cardiovascular disease. The construct of medication adherence has three phases: initiation, implementation and discontinuation. Included tools need to measure at least one of these phases. The review will consider studies of any study design that report on the measurement properties of self-reported medication adherence tools among adults with cardiovascular disease.

METHODS

The following databases will be searched from inception to present: PubMed, MEDLINE, CINAHL, ProQuest Health and Medicine, Cochrane Library, PsycINFO, Scopus, Embase and Web of Science. Articles published in any language will be included, with no date limit. Data extraction will be performed by one reviewer and cross-checked by another reviewer. Data from the included studies will be synthesized using tables for the quality of methods, and measurement property results.

SYSTEMATIC REVIEW REGISTRATION NUMBER

PROSPERO CRD42019124291.

Predicting physical activity and cardiovascular risk and quality of life in adults with osteoarthritis at risk for metabolic syndrome: A test of the information-motivation-behavioral skills model

Aim

To examine a hypothetical model of physical activity and health outcomes (cardiovascular risk and quality of life) based on the information-motivation-behavioural skills model in adults.

Design

A cross-sectional survey.

Methods

A total of 165 adults with osteoarthritis at risk for metabolic syndrome were recruited between October 2016 and September 2017 from the outpatient clinic in South Korea. Data were collected on the model constructs such as cognitive function, social support, depressive symptoms, barriers to self-efficacy, physical activity and quality of life. A hypothetical model was tested using the AMOS 25.0 program.

Results

Cognitive function and barriers to self-efficacy had a direct effect on physical activity. Physical activity had a direct effect on cardiovascular risk, while social support and depressive symptoms had a direct effect on quality of life.

Conclusions

The information-motivation-behavioural skills model can predict physical activity and, in turn, cardiovascular risk and quality of life in adults with osteoarthritis at risk for metabolic syndrome.

Behavioral Interventions to Enhance PrEP Uptake Among Black Men Who Have Sex With Men: A Review

In the United States, nearly 500,000 men who have sex with men (MSM) are at risk of contracting HIV. Men who have sex with men constitute 70% of all new cases of HIV in the United States; within this population, the incidence of HIV infection is the highest among Black MSM. Our integrated review synthesized published behavioral interventions designed to enhance the uptake of and adherence to pre-exposure prophylaxis (PrEP) for the prevention of HIV in the Black MSM population. A search of 4 electronic databases revealed only 7 studies whose samples included Black MSM. Adherence to PrEP medication declined over time across all studies. No statistically significant changes in safer sexual behaviors were reported. Few studies described theory-driven interventions. Effective interventions are needed to enhance the uptake of PrEP and to reinforce behaviors that prevent HIV transmission among Black MSM.

Interventions to Enhance Adherence to Oral Antineoplastic Agents: A Scoping Review

BACKGROUND

As new targeted oral antineoplastic therapies have emerged in recent years, the development of effective strategies that promote optimal adherence to cancer medication regimens has become an important priority.

METHODS

We conducted a scoping literature review to search for English language articles published through July 15, 2019, to identify studies that reported the testing and/or evaluation of interventions to improve adherence to oral antineoplastic agents.

RESULTS

A total of 56 articles were selected for review. Of the studies evaluated, 14 were randomized trials. All interventions except two targeted adult patients. Thirty-three studies enrolled fewer than 100 patients. Most interventions were education- and counseling-based and centered on provision of information about the drug and strategies to manage side effects. Only eight studies used an mHealth tool and/or text messages to target nonadherence. Among studies with a comparison sample, fewer than one-half (44.7%) reported statistically significant improvements in adherence or persistence associated with the intervention; however, some pharmacist-directed programs, particularly those that integrated monitoring or routine follow-up with a provider, did demonstrate efficacy.

CONCLUSION

Although the development of adherence-promoting interventions for oral antineoplastic therapies has increased recently, few have been rigorously tested. The nascent literature suggests those that are pharmacist directed and use regular monitoring show promise, though additional prospective studies are needed. Study methodology, population selection, and potential challenges that may be encountered in the implementation and dissemination phases should be considered when developing new interventions to address nonadherence to oral antineoplastic treatment.

Assessing determinants of pre-exposure prophylaxis (PrEP) adherence among a sample of rural Midwestern men who have sex with men (MSM)

Pre-exposure prophylaxis (PrEP) efficacy in preventing HIV among gay, bisexual, and other men who have sex with men (MSM) is dependent upon adherence. Little is known about the PrEP adherence experiences among MSM who live in rural areas of the US. This qualitative study was informed by a modified version of Straussian Grounded Theory. Thirty-four 34 rural Midwestern MSM participated in telephone interviews that assessed their PrEP adherence factors. Overall, participants adhered to the PrEP regimen, ranging from missing none to a couple of doses per month. Participants had high self-efficacy (competence) and self-reliance (autonomy) in taking PrEP daily. Participants incorporated PrEP into their already existing routines. Participants were motivated to adhere to prevent HIV acquisition and be financially responsible. All participants mentioned their PrEP provider discussed the importance of adherence with PrEP's effectiveness, but future patient-provider PrEP adherence communication varied among participants. Future PrEP adherence interventions should address counseling strategies that leverage these constructs to support pill taking. Future research should explore patient-provider conversations surrounding PrEP adherence to inform provider- and patient-level interventions.

The use of discrete choice experiments in adherence research: A new solution to an old problem

Theory can play an important role in providing the framework, and underpinning the design and implementation of interventions to improve medication adherence. Interventions that are grounded in a theory are relatively more effective in improving medication adherence than interventions which do not have a theoretical support. However, a large body of adherence research does not appear to be linked to any theory or model, which therefore may have resulted in interventions that are either ineffective or not sustainable. Interventions that are based on theory have mainly employed socio-behavioural models to explain, and design interventions to address, the complex phenomenon of adherence. Yet, the effectiveness of these interventions is inconclusive, supporting the argument that socio-behavioural models alone have limited applicability in explaining behaviour associated with medication-taking. An important reason for this limitation may be the complex and dynamic nature of adherence. There is a need to include a wide variety of factors in a model and examine adherence in the context of its three phases (initiation, implementation, and discontinuation). One possible way forward is to also examine medication-taking behaviour from an economic perspective, for example, by using a discrete choice experiment (DCE), which provides a different approach to understanding human behaviour about medication-taking and the complexities of decision-making in adhering to medication. DCEs can help in understanding how patients decide to initiate, continue or discontinue taking medication, factors that influence their decision, and the relative importance of those factors, which can assist researchers to prioritise interventions to improve medication adherence. Integration of multiple theories is needed to examine adherence from multiple perspectives and design interventions that are effective and sustainable. This commentary focusses on the pros and cons of some of the commonly used socio-behavioural models in adherence research and suggests a way forward by incorporating DCEs in adherence research.

A Mobile App (mHeart) to Detect Medication Nonadherence in the Heart Transplant Population: Validation Study

Background

Medication nonadherence in heart transplant recipients (HTxR) is related to graft loss and death. mHeart is a mobile app that uses electronic patient-reported outcome measures (ePROMs) to identify and manage medication nonadherence in the outpatient heart transplant (HTx) population.

Objective

The study primarily aimed to validate mHeart to measure medication nonadherence in early stage HTxR by assessing the psychometric properties of ePROMs. The secondary aims were to (1) measure patient satisfaction with the mHeart tool and its usability and (2) explore the impact of a theory-based treatment on medication nonadherence rates to determine its scalability to larger research.

Methods

A prospective study was conducted in the outpatient clinic of a tertiary hospital. All consecutive early stage HTxR (<1.5 years from HTx) were included. The ePROM psychometric properties assessed were validity, reliability, responsiveness, interpretability, and burden. ePROMs comprised the 4-item Morisky-Green-Levine questionnaire and an adapted version of the Haynes-Sackett questionnaire. The Simplified Medication Adherence Questionnaire (SMAQ) was also applied on-site. Three consecutive medication nonadherence assessments were performed by a transplant pharmacist. To improve medication nonadherence, theory-based interventions were delivered in a 1-month period. Patient satisfaction was assessed by a semiquantitative Web-based survey at the end of the study.

Results

We included 31 early stage HTxR (age: mean 54 years, SD 12 years), and 71% (22/31) of them were men. The HTxR were taking a mean 13 (SD 4; range 7-18) drugs per day. A total of 42% (13/31) of patients were unaware of the consequences of medication nonadherence, and 39% (12/31) of patients were nonadherent to immunosuppressive treatment. The content validity measure showed excellent levels of expert panel agreement for the Haynes-Sacket (14/14, 100%) and Morisky-Green-Levine (13/14, 93%) questionnaires. SMAQ and Morisky-Green-Levine ePROMs showed similar measurement domains (convergent validity, phi=0.6, P<.001), which, as expected, differed from Haynes-Sackett ePROMs (divergent validity, phi=0.3, P=.12). Reliability assessment revealed a very strong association between ePROM and on-site PROMs (phi>0.7, P<.001). Reproducibility was moderate (Haynes-Sackett κ=0.6, P<.002) or poor (Morisky-Green-Levine κ=0.3, P=.11) because of unexpected improved medication adherence rates during the test-retest period. According to responsiveness, the theory-based multifaceted intervention program improved medication nonadherence by 16% to 26% (P<.05). A burden analysis showed that ePROMs could potentially overcome traditional on-site limitations (eg, automatic recording of ePROM responses in the hospital information system). The mean score for overall patient satisfaction with the mHeart approach was 9 (SD 2; score range: 0-10). All 100% (29/29) of patients surveyed reported that they would recommend the mHeart platform to other HTxR.

Conclusions

ePROMs adhered to the quality standards and successfully identified medication nonadherence in the HTx population, supporting their widespread use. The theory-based intervention program showed a promising improvement in medication adherence rates and produced excellent patient satisfaction and usability scores in HTxR.

Effectiveness of interventions targeting self-regulation to improve adherence to chronic disease medications: a meta-review of meta-analyses

Adherence to chronic disease medication regimens depends in part on successful self-regulation. However, the overall benefit of interventions targeting self-regulatory mechanisms is not well-understood. Accordingly, we conducted a meta-review of meta-analyses assessing the effect of interventions targeting self-regulation on medication adherence. For this meta-review, meta-analyses appearing between January 2006 and March 2019 were eligible if they included experimental trials that assessed the effect of an intervention targeting self-regulation on adherence to chronic disease medication. A systematic literature search of multiple databases for published and unpublished literature identified 16,001 abstracts. Twelve meta-analyses met eligibility criteria and had variable quality according to AMSTAR 2 item completion (M = 50%; range: 31-66%). Overall, meta-reviews showed small to medium effect sizes for interventions that targeted self-monitoring, provided personalised feedback on adherence, or involved complete self-management. Other interventions, such as goal setting, barrier identification and problem solving, and stress management showed little evidence of improving adherence. Only a limited number of self-regulation intervention components were able to be evaluated. Additional research is needed to advance the understanding of the efficacy of adherence interventions focussed on self-regulation by expanding the scope of self-regulation elements targeted (e.g., emotion regulation).

Development of the NIH Patient-Reported Outcomes Measurement Information System (PROMIS) Medication Adherence Scale (PMAS)

Poor medication adherence is associated with reduced drug effectiveness, poor health-related quality of life, increased morbidity and mortality, and increased healthcare utilization and cost. Including the patient's voice is essential in understanding barriers to adherence. Useful patient-reported adherence measures are brief, inexpensive, non-invasive; can indicate barriers to adherence; and can be incorporated in electronic health records. The NIH Patient-Reported Outcomes Measurement Information System (PROMIS^®) includes high-quality, freely available patient-reported measures covering many important constructs in patient-centered research but does not include a medication adherence measure. To fill this gap, we developed the PROMIS Medication Adherence Scale (PMAS) using the rigorous PROMIS instrument development guidelines. To develop the PMAS, we first conducted a review of the reviews, which enabled us to identify content areas relevant to medication adherence behavior. Then, we conducted qualitative research to elicit patients' views of and experiences with medication adherence. This process identified the following important content areas to guide item writing: extent medication is taken, knowledge of medication regimen, beliefs about medication, remembering to take medication, skipping due to side effects, skipping due to feeling better, and cost of medications. Based on the results of these activities, we wrote items and aimed to retain 1-2 items per content area. The final item set included 9 total adherence items, which were then refined through intensive comprehension and translatability review, as well as cognitive interviews. Future steps include testing the PMAS's validity.

Factors related to the use of a head-mounted display for individuals with low vision

AIM

The decision-making process around the (non-)use of assistive technologies is multifactorial. The goal of the present study was to identify which factors predict or correlate with the use of a head-mounted magnification device for low vision (LV) (eSight Eyewear), by applying this multifactorial paradigm in order to tailor LV rehabilitation interventions to reduce device abandonment.

METHODS

Using a cross-sectional design, participants were recruited from 567 eSight Eyewear owners to complete a 45-min survey online including questions from standardized questionnaires classified into four families: personal, device-related, environmental, and interventional. Using current device use/nonuse as a binary outcome, logistic regression analyses were performed to identify the variables that predicted the highest percentage of variance in eSight use.

RESULTS

The 109 (19.2%) respondents with complete data had a mean age of 47.7 years (SD = 25.4, range: 9-96), 51% self-reported a central visual impairment. The final regression model alternatives accounted for 84.7%, 68.7%, 83.7%, and 64.7% (Nagelkerke's pseudo R²) of the variance in eSight use. The most consistently predictive variables of sustained device use across models were: higher scores on the Psychological Impact of Assistive Devices Scale (PIADS) and the Quebec User Evaluation of Satisfaction with assistive Technology (QUEST) scale, and participants' lack of experiencing headaches while using the device.

CONCLUSIONS

None of the traditional clinical variables (demographics, ocular, or general health), or LV rehabilitation experience was predictive of sustained use of a head-mounted LV display. However, the administration of standardized device-impact questionnaires may be able to identify device users that could benefit from individualized attention during LV rehabilitation provision to reduce the probability of device abandonment.Implications for rehabilitationInvestigating the factors predicting (non-)use of head-mounted magnification devices for low vision (LV) is important to identify patients with a higher risk of device nonuse and to provide evidence for interventions designed to improve use.The optimal combinations of our statistical analysis models highlighted the importance of individualized attention focusing on the user during LV rehabilitation provision of, and training with, head-mounted devices.Standardized device-related quality of life measures were robust predictors of device use and may be able to identify individuals that could benefit from individualized attention during LV rehabilitation.The absence of headaches while using a head-mounted magnification device was a robust predictor of continued use.User follow-up service satisfaction strongly predicted continued devices use, indicating that manufacturers and rehabilitation service organizations need to maintain a high level of service.

Prevalence of and factors associated with primary medication non-adherence in chronic disease: A systematic review and meta-analysis

BACKGROUND

Primary medication non-adherence (PMN), defined as failure to obtain newly prescribed medications, results in adverse clinical and economic outcomes. We aimed to (a) assess the prevalence of PMN in six common chronic diseases: asthma and/ or chronic obstructive pulmonary disease, depression, diabetes mellitus, hyperlipidaemia, hypertension and osteoporosis; (b) identify and categorise factors associated with PMN; (c) explore characteristics that contributed to heterogeneity between studies.

METHODS

We performed a systematic search in MEDLINE, Embase, Cochrane Library, CINAHL and PsycINFO. Studies published in English between January 2008 and August 2018 assessing PMN in subjects aged ≥18 years were included. We used the Cochrane risk of bias tool, Newcastle-Ottawa Scale and National Heart, Lung and Blood Institute Quality Assessment Tool to assess the quality of randomised controlled trials, cohort and cross-sectional studies, respectively. Findings were reported using the PRISMA checklist. PMN rates were pooled using a random effects model. We summarised factors associated with PMN descriptively. Subgroup analysis was performed to explore sources of heterogeneity.

RESULTS

We screened 3083 articles and included 33 (5 randomised controlled trials, 26 cohort and 2 cross-sectional studies, n = 539 156), of which 31 (n = 519 971) were used in meta-analysis. The pooled PMN rate was 17% (95% CI: 15%-20%). Pooled PMN rates were highest in osteoporosis (25%, 95% CI: 7%-44%) and hyperlipidaemia (25%, 95% CI: 18%-32%) and lowest in diabetes mellitus (10%, 95% CI: 7%-12%). Factors commonly associated with PMN include younger age, number of concurrent medications, practitioner specialty and higher co-payment. Type of chronic disease, age, study setting and PMN definition contributed to heterogeneity between studies (all P < 0.001).

CONCLUSION

Primary medication non-adherence is common among patients with chronic diseases and more needs to be done to address this issue in order to improve patient outcomes. Future PMN studies could benefit from greater standardisation to enhance comparability.

Understanding successful development of complex health and healthcare interventions and its drivers from the perspective of developers and wider stakeholders: an international qualitative interview study

OBJECTIVE

Identify how individuals involved in developing complex health and healthcare interventions (developers), and wider stakeholders in the endeavour, such as funders, define successful intervention development and what factors influence how interventions are developed.

DESIGN

In-depth interviews with developers and wider stakeholders to explore their views and experiences of developing complex health and healthcare interventions.

SETTING

Interviews conducted with individuals in the UK, Europe and North America.

PARTICIPANTS

Twenty-one individuals were interviewed: 15 developers and 6 wider stakeholders. Seventeen participants were UK based.

RESULTS

Most participants defined successful intervention development as a process that resulted in effective interventions that were relevant, acceptable and could be implemented in real-world contexts. Accounts also indicated that participants aimed to develop interventions that end users wanted, and to undertake a development process that was methodologically rigorous and provided research evidence for journal publications and future grant applications. Participants' ambitions to develop interventions that had real-world impact drove them to consider the intervention's feasibility and long-term sustainability early in the development process. However, this process was also driven by other factors: the realities of resource-limited health contexts; prespecified research funder priorities; a reluctance to deviate from grant application protocols to incorporate evidence and knowledge acquired during the development process; limited funding to develop interventions and the need for future randomised controlled trials (RCTs) to prove effectiveness. Participants expressed concern that these drivers discouraged long-term thinking and the development of innovative interventions, and prioritised evaluation over development and future implementation.

CONCLUSIONS

Tensions exist between developers' goal of developing interventions that improve health in the real world, current funding structures, the limited resources within healthcare contexts, and the dominance of the RCT for evaluation of these interventions. There is a need to review funding processes and expectations of gold standard evaluation.

Nursing Interventions on Medication Adherence During Hepatitis C Treatment: Application of Self-Regulation Model

Hepatitis C virus is a common cause of liver disease nationally and globally. Medication adherence to hepatitis C treatment is important for viral eradication and the prevention of chronic disease. The purpose of this article is to identify a nursing middle-range theory to guide research on the impact of nursing interventions on medication adherence during hepatitis C treatment and to apply the theory to practice by providing examples of the theory application. A gap in the literature is identified as the lack of research using theories or models as a guide to investigate nursing interventions and hepatitis C treatment. The lack of theory-based research may contribute to medication nonadherence. The self-regulation model provides the most complete guide for nursing interventions during hepatitis C treatment. Nursing interventions and hepatitis C research, guided by theory, generate knowledge specific for nursing.

A Systematic Review of Patient- and Family-Level Inhaled Corticosteroid Adherence Interventions in Black/African Americans

BACKGROUND

Inhaled corticosteroid (ICS) adherence rates are suboptimal among adult black/African Americans. Comprehensive studies characterizing the effectiveness and the methodological approaches to the development of interventions to improve ICS adherence in adult black/African Americans have not been performed.

OBJECTIVES

Conduct a systematic review of patient/family-level interventions to improve ICS adherence in adult black/African Americans.

METHODS

We searched MEDLINE, EMBASE, Web of Science, and CINAHL from inception to August 2017 for English-language US studies enrolling at least 30% black/African Americans comparing patient/family-level ICS adherence interventions with any comparator. Two investigators independently selected, extracted data from, and rated risk of bias. We collected information on intervention characteristics and outcomes, and assessed whether studies were informed by behavior theory, stakeholder engagement, or both.

RESULTS

Among 1661 abstracts identified, we reviewed 230 full-text articles and identified 4 randomized controlled trials (RCTs) and 1 quasi-experimental (pre-post design) study meeting criteria. Study participants (N range, 17-333) varied in mean age (22-47 years), proportion black/African Americans studied (71%-93%), and sex (69%-82% females). RCTs evaluated problem-solving classes, self-efficacy training, technology-based motivational interviewing program, and the use of patient advocates. The RCT testing self-efficacy training was the only intervention informed by both behavior theory and stakeholder engagement. All 4 RCTs compared interventions with active control and rated as medium risk of bias. No RCTs found a statistically significant improvement in adherence.

CONCLUSIONS

Few studies assessing asthma adherence interventions focused on adult black/African-American populations. No RCTs demonstrated improved ICS adherence in participants. Future studies that are informed by behavior change theory and stakeholder engagement are needed.

Effectiveness of interventions for optimising adherence to treatments for the prevention and management of scars: protocol for a systematic review and meta-analysis

INTRODUCTION

Treatments used in the management of scarring following wounds of the skin can be complex and time consuming, and patients may experience difficulties adhering to these treatments. Therefore, the aim of this systematic review is to identify the types of interventions that have been used to optimise adherence to treatment for preventing or reducing skin scars in adults and children and to determine the effectiveness of these interventions.

METHODS AND ANALYSIS

Databases (PubMed, Embase, the Cumulative Index to Nursing and Allied Health Literature, PsycINFO, Web of Science and OTSeeker) will be searched using the developed search strategy to identify eligible randomised trials. Adults and children using scar treatments to prevent or manage scarring as a result of a dermal wound (which may occur following burn injury, surgery, lacerations, piercings, vaccinations, acne and other conditions affecting the skin) will be included. Any intervention with the potential to effect adherence will be included. Titles and abstracts located through searching will be screened by two independent reviewers. Full text of studies will also be screened to determine eligibility for final inclusion. Two reviewers will assess the quality of included studies using the Cochrane 'risk of bias' tool. Data extraction forms will be developed and two reviewers will extract the data. A third reviewer will be used at each stage to ensure consensus is achieved. Meta-analysis and meta-regression will be completed if appropriate, otherwise a narrative synthesis of results will be undertaken.

ETHICS AND DISSEMINATION

No ethical approval is necessary for this systematic review as no patients will be directly involved. Results of this systematic review will be disseminated through journal publications and relevant conference presentations.

PROSPERO REGISTRATION NUMBER

CRD42018095082.