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ONGOING STUDIES

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Multimorbidity and Knowledge Architectures: An Interdisciplinary Global Health Collaboration

Principle Investigator: Justin Dixon

Co-investigators: Chiratidzo Ndhlovu, Rashida Ferrand, Clare Chandler, Emily Mendenhall, Karen Webb, Theonevus Tinashe Chinyanga

Funding: Wellcome Trust, United Kingdom

Dates: 2021-2024

Multimorbidity – the coexistence of multiple chronic conditions in one individual – has become an increasingly pertinent health challenge as people live longer. Long known to be more the rule than the exception in the global north, multimorbidity is also increasingly being recognised as a key health challenge facing nations in the global south.

Yet, the architectures of science, healthcare and indeed the very way we classify and conceptualise disease remain organised along single-disease and single-organ lines. The KnowM study, supported by a Wellcome Trust Fellowship in Humanities and Social Science held by Justin Dixon, brings together a wide range of researchers, policymakers, healthcare professionals and patient groups to develop an interdisciplinary conceptual framework and research strengthening agenda for responding to multimorbidity in sub-Saharan Africa. The project is conducted through The Health Research Unit Zimbabwe (THRU ZIM) in collaboration with the University of Zimbabwe, the Zimbabwe Ministry of Health and Child Care, and the Organisation for Public Health Interventions and Development (OPHID).  Study Design ​ The KnowM study combines ethnographic fieldwork in research and care settings in Zimbabwe with a series of collaborative and participatory research activities. This includes ethnographic fieldwork, audio-visual diaries, participatory workshops and multi-country symposia – all of which will progressively work towards co-producing research outputs. These methods are designed to cut across disciplinary and disease siloes and move beyond entrenched binaries such as ‘communicable’ and ‘noncommunicable’, ‘acute’ and ‘chronic’ and ‘biological’ and ‘social’ that persistently work against more effective and equitable health work. ​ Publications ​ Making morbidity multiple: History, legacies, and possibilities for global health - Justin Dixon, Emily Mendenhall, Edna N Bosire, Felix Limbani, Rashida A Ferrand, Clare I R Chandler, 2023 (sagepub.com) ​ Syndemic thinking to address multimorbidity and its structural determinants | Nature Reviews Disease Primers

The Multilink Consortium is a UK National Institute for Health and Care Research (NIHR) funded programme administered through LSTM with five partner organisations. It is being conducted in Malawi and Tanzania and seeks to design and test a system that identifies patients suffering from multiple chronic diseases (multimorbidity) when they seek emergency care in sub-Saharan African hospitals. The overall aim is to improve early disease treatment, ensure better follow up (prevent complications, disability and hospital readmission), thus improving health related quality of life and survival rates.

Website: https://multilinknihr.com/

The IMBA Hutano study (Integrated Multi-disease health checks for TB-affected Households) is exploring the burden and patterns of multimorbidity among TB affected households, and developing an integrated service delivery approach for TB household contact tracing.

 

More info available here: https://www.thruzim.org/multimorbidity

Y-Check is a research programme investigating the effectiveness of a novel intervention providing adolescent health and well-being check-ups in schools and communities in three African cities in Ghana, Tanzania and Zimbabwe.

 

During Phase 2 of the Y-Check Research Programme (2021-2025), in 6000 adolescents, Y-Check will provide health promotion information, and health screening and referrals for approximately 20 conditions and risk factors. The impact of the intervention on implementation, health and wellbeing outcomes will be evaluated. In this phase, Y-Check will also explore how best to bring together adolescents and young people using a digital health club

 

More info here: https://www.thruzim.org/adolescenthealth

CORD: Characterisation Of caRdiac Disease in adolescents with perinatally-acquired HIV infection in the antiretroviral therapy

CORD is an observational study characterising myocardial disease in adolescents aged 10-19 years with perinatal HIV and established on ART, using cardiac magnetic resonance imaging. It also seeks to understand the role of inflammation and fibrosis in the pathophysiological process of HIV-related cardiac disease.

 

More info here: https://www.thruzim.org/multimorbidity

Multimorbidity in Africa: epidemiology and experience

 

This project aims to address key evidence gaps in multimorbidity research in LMICs, that have been identified by the Academy of Medical Sciences, namely to enhance our understanding of "disease clustering in defined populations/patient groups" and "the experiences and preferences of patients with different types of multimorbidity".  This project will involve 3 work-packages (WPs) and use data sources from 3 African nations, Gambia, Uganda and Malawi. These three countries are on the Development Assistance Committee (DAC) list of "least developed countries."

The work represents a collaboration led by the University of Glasgow (UoG), which has particular expertise in multimorbidity research, using both data science and qualitative methods, along with partners in Malawi, the MRC Units in Gambia and Uganda and the London School of Hygiene and Tropical Medicine. Aims The planned collaboration aims to build mixed methods research capacity in multimorbidity in Africa and the UK with the following objectives: 1. To explore available data sets in Malawi, Gambia and Uganda to identify and compare the prevalence and patterns of multimorbidity, including both physical and mental health conditions. 2. To use qualitative methods to explore the lived experiences of multimorbidity, with a particular focus on the concept of Treatment Burden. 3. To build institutional mixed methods research capacity, preparing a new generation of investigators in the partner institutions with an enhanced understanding of Multimorbidity and its implications in different contexts 4. To convene a forum of investigators from Malawi, Uganda, Gambia and the UK along with key stakeholders to share experiences of multimorbidity research, opportunities and key challenges The project will promote mixed methods collaborative work in the sphere of multimorbidity in Sub Saharan Africa (SSA) that will underpin future research into the patient experience, the design of health and social care systems, the epidemiology and economics of multimorbidity in SSA as well as underpinning mechanistic work. Publications: Experiences of multimorbidity in urban and rural Malawi: An interview study of burdens of treatment and lack of treatment Edith F. Chikumbu, Christopher Bunn, Stephen Kasenda, Albert Dube, Enita Phiri-Makwakwa, Bhautesh D. Jani, Modu Jobe, Sally Wyke, Janet Seeley, Amelia C. Crampin, Frances S. Mair, on behalf of the MAfricaEE Project https://doi.org/10.1371/journal.pgph.0000139 PI: Francis Mair Co-Is: Chris Bunn, Gertrude Chapotera, Mia Crampin, Bhautesh Jani, Modu Jobe, Andrew Prentice, Alison Price, Janet Seeley. Funder: Medical Research Council (MRC), Uniter Kingdom Dates: 2020 – 2022

Fractures in Sub-Saharan Africa: Epidemiology, Economic Impact and Ethnography (The FRACTURES-E³ Study)

Life expectancy is rising more rapidly in Africa than any other continent globally. As countries in sub-Saharan Africa (SSA) transition due to rapid urbanisation, their changing demographics are giving rise to an increasing burden of non-communicable diseases (NCDs) of ageing, this includes fractures, often as a consequence of skeletal fragility. Fractures can be devastating, causing pain, disability, loss of productivity and sometimes death. Such fractures may occur in the context of multimorbidity (e.g. obesity and osteoarthritis). At the same time in SSA, communicable diseases (e.g. HIV), with both short- and longer-term sequelae, continue to affect millions of people every year. In high-income countries fractures place significant strain on healthcare services and budgets.


For countries in Africa to plan future healthcare services we need to understand the epidemiology of key fracture types, their costs both monetarily and for the patient themselves, and what healthcare resources are currently in place to provide for those who fracture, and that might be amenable to future development. ​Aims In Zimbabwe and The Gambia we will establish how frequently two key age-related fractures occur: vertebral fractures (the commonest) and hip fractures (the most life-challenging), and the associated risk factors for these fracture types. We will assess recovery, disability and death rates following hip fracture, and identify factors that improve outcomes for patients. We will calculate how much fractures cost health services now and in the future. By talking with patients and healthcare workers we will learn of their experiences and gain insights into how fracture care can be improved in the future. Aims and Approach This study is an international mixed-methods study using cross-sectional and longitudinal study designs together with ethnographic study to investigate the epidemiology, economic impact, and ethnography of fractures in The Gambia and Zimbabwe. Within four workpackages (WP) we aim to address the following objectives: WP1. Determine the epidemiology of vertebral fractures Quantify vertebral fracture prevalence amongst men and women aged 40 years and older by community-based population surveys across urban, peri-urban, and rural settings. Determine clinical risk factors for vertebral fractures, particularly the role of HIV and HIV-related factors, the role of traditional osteoporosis risk factors, and other co-morbidities, between individuals with and without fracture. We will further determine the prevalence of wider musculoskeletal morbidities, including osteoarthritis, sarcopenia and injurious falls, and associations with functional impairment in terms of activities of daily living (ADLs), and health-related quality-of-life (HR-QOL).  Individuals surveyed in WP1(a) without a history of hip fracture, will provide an age and sex frequency-matched comparator group for the incident hip fracture population, identified in 2(b) below. WP2. Determine the epidemiology of hip fractures Determine hip fracture incidence in men and women aged 40 years and older. Understand risk factors, fracture mechanisms (determining the burden due to fragility relative to trauma), and management received Establish hip fracture outcomes over 12 months, including hospital length-of-stay, readmission, mortality, function in terms of ADLs, disability, and HR-QOL, and predictors of adverse outcomes. WP3. Determine the health costs attributable to incident hip fractures and model future fracture burdens Using high-quality patient and site-level cost data on healthcare in the year following hip fracture we will perform health economic analyses to determine the direct and indirect health costs and budget impact attributable to hip fracture care, informing decision makers on affordability of different care models. We will establish the main predictors of healthcare costs using risk factors and outcomes recorded in WP2. We will determine the cost-effectiveness of different pathways of care and cost-effectiveness-based intervention thresholds for the treatment of osteoporosis within these settings. Combining data from WP1, WP2 and population projection data, we will model future fracture burdens and health costs predicted to be attributable to hip fracture within the region. WP4. Quantify current hip fracture services for each country (WP4) We will quantify current hip fracture services for each country, including types of facilities, fracture services, referral patterns, drug supplies/costs, staffing, equipment, and radiology using the modified WHO Service Availability & Readiness Assessment (SARA) survey framework. ​WP5. Understand and characterise care pathways for hip fracture and identify factors that help and hinder set-up and implementation of fracture services (WP5) If ultimately this research is to impact health policy and the configuration of fracture services in SSA, it is crucial to understand current health services and management practices to inform healthcare improvement strategies. We will characterise hip fracture services by ethnographic study in both urban and rural environments, aiming to understand: Pathways to and through fracture care, including how people with fractures do or do not make it into and through current services. Factors that help or hinder the implementation of fracture treatment services. We will explore and characterise decision rationales and barriers and facilitators to care delivery. Expected impact Greater understanding of fracture care will be able to inform health service policy and planning in SSA, for example it is intended that our findings will influence essential medicines availability, calibrate risk assessment tools for generalised clinical use, inform national clinical guidelines and advise health service development for the future. ​Funder:  Collaborator Award funded by the NIHR-Wellcome Partnership for Global Health Research PI: Dr Celia Gregson (University of Bristol, UK) ​Co-investigators: Prof Rashida Ferrand (Biomedical Research and Training Institute, Zimbabwe / London School of Hygiene and Tropical Medicine, UK)

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Keeping Older people healthy: deSigning and evaluating effective HEalth Services to maintain functional AbIlity (KOSHESAI)

 

Part of a Healthy Ageing Research Programme in Sub-Saharan Africa

April 2023-March 2028

 

Life expectancy is rising more rapidly in Africa than any other continent. Whilst welcome, longevity alone is insufficient, and maintenance of functional ability is crucial, that is Healthy Ageing. WHO defines healthy ageing as the process of developing and maintaining the functional ability which consists of a person’s intrinsic capacity within their environment, drawing on physical capacity to walk, see and hear, as well as their cognitive capacity.

We aim is to develop and implement an evidence-based clinical framework for non-specialist assessment and management of chronic disorders of ageing which impact functional ability, to improve health and wellbeing of older people living in Zimbabwe.

The programme comprises 5 work packages, (1) Characterisation of ‘healthy ageing’ in Zimbabwe; (2) Formative work to develop an integrated multi-component health check for community-dwelling older adults; (3) a Effectiveness-intervention hybrid study and mixed-methods process evaluation of the healthy ageing check; (4) Co-design and implementation of community-based healthy ageing peer-to-peer support groups; and (5) Co-development of a ‘Healthy Ageing Intervention Toolkit’ for wider use. Older people, carers and stakeholders will participate in formative study development and evaluation processes. We will then screen 824 older people living in Harare for conditions impacting functional ability, spanning mobility, malnutrition, cognition, depression, vision, and hearing. If screening positive, initial on-the-spot care will be provided, care will be supported by community-based healthy ageing peer-to-peer support groups, promoting functional ability by facilitating self-management. When we identify a problem we will offer advice, practical solutions and if needed facilitate specialist referral, using an integrated personalised care plan model. The primary outcome will be the proportion who screen positive for ≥1 condition, receive on-the-spot care or complete appropriate referral to support within 4 months. Our findings will enable us to develop a ‘Healthy Ageing Intervention Toolkit’ to guide the structured, comprehensive, person-centred assessment and management of older people, ready for scale-up across sub-Saharan Africa. Lead: Prof. Celia Gregson, NIHR Global Health Professor of Healthy Ageing Funder: The National Institute for Health Research, UK.

The VITALITY trial (VITamin D for AdoLescents with HIV to reduce musculoskeletal morbidity and ImmunopaThologY) is investigating the effect of high dose weekly vitamin D (20,000iu) and daily calcium carbonate (500mg) or placebo supplementation for 48 weeks on bone health in adolescents with perinatally acquired HIV resident in Lusaka, Zambia and Harare, Zimbabwe.

More info here: https://www.thruzim.org/multimorbidity

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COMPLETED STUDIES

A population-based survey of young people across 3 urban and peri-urban settings investigating a range of health behaviours and conditions. The survey was undertaken to ascertain outcomes of a cluster randomised trial of community-based HIV and sexual and reproductive health services and was conducted in 24 communities across 3 provinces of Zimbabwe in a randomly selected sample of 16,800 youth aged 18-24 years, and standardised questionnaires and tools. This is the largest survey of youth in Africa

 

The survey ascertained Knowledge of HIV status, HIV prevalence (and viral suppression in those who were HIV antibody positive), knowledge and use of HIV prevention modalities, a range of behaviours (contraception use, substance use, alcohol and tobacco use, physical activity, usage of digital technology), comorbidities (mental health, high blood pressure), as well as gender norms and experience of violence.  

More info here: www.chiedza.co.zw

Soweto Syndemics “Soweto Syndemics” was funded by the National Institutes of Health Fogarty International Center (R21) and was the first study to ever study syndemics from the “ground up”. Building on two previous ethnographic research studies, we built scales with a team of interdisciplinary researchers and Sowetans that captured what caused stress and ill-health, and how people coped with living with chronic illness(es) in Soweto. We had surveyed nearly one thousand people and conducted lengthy follow-up narrative interviews with 88 people when everything shut down due to the COVID-19 pandemic. Within a month into lockdown, we revamped our research and conducted phone-based interviews with hundreds of participants to investigate the social and psychological experiences of quarantine. Later that year, we followed up via phone with our interlocutors to discuss concepts of stress, wellbeing, flourishing, and what good health means in everyday life. Resources: Schmidt-Sane,Megan, Lindile Cele, Edna Bosire, Alexander Tsai, Emily Mendenhall.Flourishing with chronic illness(es) and everyday stress: experiences from Soweto,South Africa.” Wellbeing, Space, and Society, 4: 100144. Mpondo, Feziwe, Andrew Wooyoung Kim, AlexanderC. Tsai, Emily Mendenhall. 2022. “Development and Validation of theSoweto Coping Scale: A Mixed-Methods, Population-Based Study of Adults Livingin Soweto, South Africa.” Journal of Affective Disorders, 303:353-358. Mendenhall, Emily, Andrew Wooyoung Kim, Anthony Panasci,Lindile Cele, Feziwe Mpondo, Edna N. Bosire, Shane A. Norris, Alexander C.Tsai. 2022. “A mixed-methods, population-based study of a syndemic in Soweto, SouthAfrica.” Nature Human Behavior, 6:64-73. Cele, Lindile, Sarah S. Willen, Maydha Dhanuka,Emily Mendenhall. 2021. “Ukuphumelela:Flourishing and the pursuit of agood life, and good health, in Soweto, South Africa.” SSM—Mental Health,1: 100022. Mpondo, Feziwe, Andrew Wooyoung Kim, AlexanderC. Tsai, Emily Mendenhall. 2021. “Development and Validation ofthe Soweto Stress Scale: Mixed-Methods, Population-Based Study of Adults Livingin Soweto, South Africa.” Social Scienceand Medicine, 281:114023. Kim, Andrew Wooyoung, Raquel Burgess, NicolaChiwandire, Zwannda Kwinda, Shane Norris, Alexander Tsai, Emily Mendenhall.2021. “Perceptions, risk, and understandings of the COVID-19 pandemic in urbanSouth Africa.” South African Journal of Psychiatry,27(1580). Bosire, Edna, Lindile Cele, Xola Potelwa, Alison Cho, Emily Mendenhall. 2021. “God,Herbs, and Church Water: Perspectives on health and healing in Soweto, SouthAfrica.” Global Public Health, 17(7):1172-1185. Kim, Andrew Wooyoung, Tawanda Nyengerai, EmilyMendenhall. 2020. “Evaluating the Mental Health Impacts of the COVID-19Pandemic: Perceived Risk of COVID-19 Infection and Childhood Trauma Predict AdultDepressive Symptoms in Urban South Africa.” PsychologicalMedicine, epub Sept 8; 1-24.

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