Agyemang Charles

Amsterdam University Medical Center | VUmc · Department of Public and Occupational Health

Background In many resource-limited settings, understaffed hospitals rely on patients’ families to provide care during admission. These care tasks are often performed informally, untrained and unsupported. The WHO has called for innovative approaches to tackle health worker shortages globally. Family participation interventions could be such an inn...

West African (WA) migrants in Europe have higher hypertension rates than the host populations. For African migrants, guidelines recommend diuretics and/or calcium channel blockers (CCB) for primary cardiovascular disease prevention, but data on antihypertensive medication (AHM) prescription patterns or related hypertension control rates are lacking...

Introduction Over the past few decades, the prevalence of hypertension in Ghana has increased significantly. Insufficient diagnosis and suboptimal management of diagnosed cases result in increased mortality and morbidity due to poor blood pressure control and attendant complications. This highlights the need for new models of hypertension control i...

Background Diabetes can be detected at the primary health-care level, and effective treatments lower the risk of complications. There are insufficient data on the coverage of treatment for diabetes and how it has changed. We estimated trends from 1990 to 2022 in diabetes prevalence and treatment for 200 countries and territories. Methods We used da...

Background Limited longitudinal data exist on chronic kidney disease (CKD) in African populations undergoing epidemiological transitions. We investigated incidence, long-term predictors, and progression of CKD among Ghanaians residing in rural- and urban-Ghana, and Ghanaian migrants in the Netherlands (Amsterdam). Methods We analysed data from 218...

Background and aim The aim of the study was to explore the experiences of accessing care, diagnosis, and rehabilitation among patients with long-COVID in a multiethnic population in Denmark. Methods Qualitative research using semi-structured interviews among a purposive sample of 18 people diagnosed with long-COVID, according to the NICE guideline...

Background and aim Ethnic minorities living in high-income countries have been disproportionately affected by COVID-19 in terms of infection rates, hospitalisations, and deaths; however, less is known about long COVID in these populations. Our aim was to examine the risk of long COVID and associated symptoms among ethnic minorities. Methods We use...

Objective To assess the availability and marketing of ultra-processed foods (UPFs) in modern retail food outlets (supermarkets and minimarts) in Kenya and associated factors. Design This cross-sectional study was conducted in Kenya from August 2021 to October 2021. Variables included; the geographic location and the socioeconomic status levels (SE...

Key Messages Cardiovascular emergencies contribute significantly to morbidity and mortality in Africa, partly perhaps due to a combination of time-related delays in appreciating symptoms, getting to an intervention-capable facility, and prevailing emergency care systems. Drawing experiences from across Africa, we discuss unique limitations to promp...

Background A series of modifiable lifestyle factors, such as diet quality, physical activity, alcohol intake, and smoking, may drive the rising burden of type 2 diabetes (T2DM) among sub-Saharan Africans globally. It is unclear whether epigenetic changes play a mediatory role in the associations between these lifestyle factors and T2DM. We assessed...

Background The aim of this study was to explore predictors associated with reasons for visiting an oral healthcare professional (OHP) and satisfaction with OHPs in the Netherlands among the Indian migrants and the host population. Methods A random sample was obtained for this cross-sectional questionnaire study. Variables were classified according...

Background The burden of chronic non-communicable diseases (NCDs) is a growing public health concern. The availability of cost-of-illness data, particularly public healthcare costs for NCDs, is limited in Sub-Saharan Africa (SSA), yet such data evidence is needed for policy action. Objective The objective of this study was to estimate the economic...

Background The sustainability of diets consumed by African populations under socio-economic transition remains to be determined. This study developed and characterized a multi-dimensional Sustainable Diet Index (SDI) reflecting healthfulness, climate-friendliness, sociocultural benefits, and financial affordability using individual-level data of ad...

Background: Marketing of ultra-processed foods (UPFs) can influence purchase intentions and consumption of such foods, especially among children. There is limited evidence on the extent to which UPFs are marketed around schools in low- and middle-income countries (LMICs), including Kenya. We assessed the extent, content, and type of advertising of...

Background Adiposity can be measured using BMI (which is based on weight and height) as well as indices of abdominal adiposity. We examined the association between BMI and waist-to-height ratio (WHtR) within and across populations of different world regions and quantified how well these two metrics discriminate between people with and without hyper...

Introduction COVID-19 affected healthcare access, utilisation and affordability, especially for patients suffering from chronic diseases, including type 2 diabetes (T2D). This study measured the occurrence and magnitude of changes in healthcare and broader societal costs among patients with T2D before and during COVID-19 in Kenya and Tanzania to un...

The prevalence of hypertension, the commonest risk factor for preventable disability and premature deaths, is rapidly increasing in Africa. The African Control of Hypertension through Innovative Epidemiology, and a Vibrant Ecosystem [ACHIEVE] conference was convened to discuss and initiate the co-implementation of the strategic solutions to tame th...

Objective To identify if differences in dietary, and serum, sodium and potassium levels are associated with differences in aldosterone, renin and the aldosterone-renin ratio. Secondly, to assess the contribution of confounders, and site-specific factors. Design and method A multi-site analytical cross-sectional study using baseline data from the R...

Europe and North America are the 2 largest recipients of international migrants from low‐resource regions in the world. Here, large differences in cardiovascular disease (CVD) morbidity and death exist between migrants and the host populations. This review discusses the CVD burden and its most important contributors among the largest migrant groups...

Cardiovascular diseases (CVD) are the leading cause of death worldwide, with 80% of these deaths occurring in low-middle income countries (LMICs). In Ghana and across Africa, CVDs have emerged as the leading causes of death primarily due to undetected and under treated hypertension, yet less than 5% of resources allocated to health in these resourc...

This review aimed to systematically quantify the differences in Metabolic Syndrome (MetS) prevalence across various ethnic groups in high-income countries by sex, and to evaluate the overall prevalence trends from 1996 to 2022. We conducted a systematic literature review using MEDLINE, Web of Science Core Collection, CINAHL, and the Cochrane Librar...

Background Limited data exist about the relationship between acculturation and oral health. Hence, the aim of this study was to assess the association of integration with self-reported oral health, behaviours, and oral healthcare utilization among Indian migrants living in the Netherlands, a cross sectional survey study. Methods Between February a...

Summary Background Underweight and obesity are associated with adverse health outcomes throughout the life course. We estimated the individual and combined prevalence of underweight or thinness and obesity, and their changes, from 1990 to 2022 for adults and school-aged children and adolescents in 200 countries and territories. Methods We used data...

Background The increasing cardiovascular disease (CVD) burden threatens the global population as the major cause of disability and premature death. Data are scarce on the magnitude of CVD among the population in West Africa, particularly in Ghana. This study examined the available scientific evidence to determine the pooled prevalence (PP) of CVD a...

Background Ethnic minorities living in high-income countries have been disproportionately affected by Coronavirus Disease 2019 (COVID-19) in terms of infection rates, hospitalisations, and deaths; however, less is known about long COVID in these populations. Our aim was to examine the risk of long COVID and associated symptoms among ethnic minoriti...

Background Digital health interventions can be effective for blood pressure (BP) control, but a comparison of the effectiveness and application of these types of interventions has not yet been systematically evaluated in low- and middle-income countries (LMICs). This study aimed to compare the effectiveness of digital health interventions according...

Background: The burden of chronic non-communicable diseases (NCDs) is a growing public health concern. The availability of cost-of-illness data, particularly public healthcare costs for NCDs, is limited in Sub-Saharan Africa (SSA), yet such data evidence is needed for policy action. Objective: The objective of this study was to estimate the economi...

Background The rapidly rising cardiometabolic disease (CMD) burden in urbanizing sub-Saharan African populations and among sub-Saharan African migrants in Europe likely affects serum adiponectin and leptin levels, but this has not yet been quantified. Objectives To compare the serum levels of adiponectin and leptin among migrant, and non-migrant (...

Human height and related traits are highly complex, and extensively research has shown that these traits are determined by both genetic and environmental factors. Such factors may partially affect these traits through epigenetic programing. Epigenetic programing is dynamic and plays an important role in controlling gene expression and cell differen...

Background: Non-invasive diabetes risk models are a cost-effective tool in large-scale population screening to identify those who need confirmation tests, especially in resource-limited settings. Aims: This study aimed to evaluate the ability of six non-invasive risk models (Cambridge, FINDRISC, Kuwaiti, Omani, Rotterdam, and SUNSET model) to id...

Background: The health challenges faced by the homeless are widely unaccounted for in the global south. In India, the lack of a primary healthcare sector in urban areas has led informal healthcare providers, such as Street Medicine, to step in. Methods: By compiling data collected by the Centre for Equity Studies’ Street Medicine teams from June 20...

Fasting plasma glucose (FPG) and hemoglobin A1c (HbA1c) are both used to diagnose diabetes, but these measurements can identify different people as having diabetes. We used data from 117 population-based studies and quantified, in different world regions, the prevalence of diagnosed diabetes, and whether those who were previously undiagnosed and de...

Objective Evidence shows that the conventional cardiometabolic risk factors do not fully explain the burden of microvascular complications in type 2 diabetes (T2D). One potential factor is the impact of pulmonary dysfunction on systemic microvascular injury. We assessed the associations between spirometric impairments and systemic microvascular com...

Background Sub-Saharan African (SSA) migrants are disproportionately affected by hypertension, compared to the European-host population. Underlying reasons for the increased hypertension prevalence are still unclear, and longitudinal data are lacking. The aim of this study was to describe hypertension prevalence and incidence rates among Ghanaian m...

The aim of this study was to assess the oral health status, oral health behaviours and oral healthcare utilization among Indian migrants living in the Netherlands and how they compare with the host population. Based on a random sample from Dutch municipalities, cross-sectional data were obtained for the Indian migrants living in the Netherlands (n...

Objective This study assessed stakeholder readiness to address unhealthy food and beverage marketing and availability in/around Public Basic Schools (for children 4–15 years) in Greater Accra Region, the highly urbanised administrative capital of Ghana. Design The community readiness model was used to conduct in-depth mixed methods interviews with...

Introduction Cardiovascular diseases (CVD) remain the leading cause of death worldwide, with over 70% of these deaths occurring in low- and middle-income regions such as Africa. However, most countries in Africa do not have the capacity to manage CVD. The Ghana Heart Initiative has been an ongoing national program since 2018, aimed at improving CVD...

Background Ethnic minorities living in high-income countries have been disproportionately affected by COVID-19 in terms of infection rates and hospitalisations; however, less is known about long COVID in this population. Our aim was to examine the risk of long COVID and associated symptoms among ethnic minorities. Methods and Findings A Danish nati...

Understanding the patterns of multimorbidity, defined as the co-occurrence of more than one chronic condition, is important for planning health system capacity and response. This study assessed the association of different cardiometabolic multimorbidity combinations with healthcare utilization and quality of life (QoL). Data were from the World Hea...

Objective Understanding the facilitators and barriers to managing hypertension and type 2 diabetes (T2D) will inform the design of a contextually appropriate integrated chronic care model in Kenya. We explored the perceived facilitators and barriers to the integrated management of hypertension and T2D in Kenya using the Rainbow Model of Integrated...

Background: Metabolic conditions, including intermediate hyperglycemia (IH), affect migrants to a greater extent than the populations of origin. Evidence suggests that IH increases the risk of vascular complications, but it is unclear whether the differences in IH between the non-migrant and migrant populations translate to differences in vascular...

Digital transformation in health care has a lot of opportunities to improve access and quality of care. However, in reality not all individuals and communities are benefiting equally from these innovations. People in vulnerable conditions, already in need of more care and support, are often not participating in digital health programs. Fortunately,...

Background Although risk factors for differences in SARS-CoV-2 infections between migrant and non-migrant populations in high income countries have been identified, their relative contributions to these SARS-CoV-2 infections, which could aid in the preparation for future viral pandemics, remain unknown. We investigated the relative contributions of...

Adult-onset diabetes mellitus (here: aDM) is not a uniform disease entity. In European populations, five diabetes subgroups have been identified by cluster analysis using simple clinical variables; these may elucidate diabetes aetiology and disease prognosis. We aimed at reproducing these subgroups among Ghanaians with aDM, and establishing their i...

Objectives This review aimed at identifying the elements of integrated care models for cardiometabolic multimorbidity in sub-Saharan Africa (SSA) and their effects on clinical or mental health outcomes including systolic blood pressure (SBP), blood sugar, depression scores and other patient-reported outcomes such as quality of life and medication a...

Introduction: Integrated chronic disease management is the desired core function of a responsive healthcare system. However, many challenges surround its implementation in Sub-Saharan Africa. The current study assessed the readiness of healthcare facilities to provide integrated management of cardiovascular diseases (CVDs) and type 2 diabetes in K...

Background and Aims The 2009 Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation is the current standard method for estimating GFR. There has been debate whether or not to exclude the race/ethnicity coefficient from this equation. Recently, the National Kidney Foundation and American Society of Nephrology Task Force on Reassessing...

Introduction: Patient support group interventions have been widely used to manage chronic diseases in Kenya. However, the potential benefits of these groups on patient health outcomes, and how this is influenced by multimorbidity, have not been rigorously evaluated. Objective: We assessed the effect of a patient support group intervention on blo...

Objective The epigenetic regulation of the renin-angiotensin-aldosterone system (RAAS) potentially plays a role in the pathophysiology underlying the high burden of hypertension in sub-Saharan Africans (SSA). In this first epigenome-wide association study (EWAS) of plasma renin and aldosterone concentrations, we explored the association between DNA...

Objective Sub-Saharan African (SSA) migrants are disproportionately affected by hypertension, compared to the European-host population. Underlying reasons for the increased hypertension prevalence are still unclear, but suggest that rapid changes in lifestyle and environment after migration, in combination with genetic factors, might be responsible...

Introduction Cardiovascular diseases (CVD) remain the leading cause of death worldwide, with over 70% of these deaths occurring in low- and middle-income regions such as Africa. However, most countries in Africa do not have the capacity to manage CVD. The Ghana Heart Initiative has been an ongoing national program since 2018, aimed at improving CVD...

In Europe, migrants and ethnic minority groups are at greater risk for mental disorders compared to the general population. However, little is known about which interventions improve their mental health and well-being and about their underlying mechanisms that reduce existing mental health inequities. To fill this gap, the aim of this scoping revie...

Hypertension is a leading preventable and controllable risk factor for cardiovascular and cerebrovascular diseases and the leading preventable risk for death globally. With a prevalence of nearly 50% and 93% of uncontrolled cases, very little progress has been made in detecting, treating, and controlling hypertension in Africa over the past thirty...

Background: Comprehensive data on long COVID across ethnic and migrant groups are lacking. We investigated incidence, nature of symptoms, clinical predictors, and duration of long COVID among COVID-19 hospitalised patients in the Netherlands by migration background (Dutch, Turkish, Moroccan, and Surinamese origin, Others). Methods: We used COVID...

Background: West Africans and African Americans with substantial (∼80%) West African ancestry are characterized by low levels of triglycerides (TG) compared to East Africans and Europeans. The impact of these varying TG levels on other cardiometabolic risk factors is unclear. We compared the strength of association between TG with hypertension, blo...

Optimal growth and development in childhood and adolescence is crucial for lifelong health and well-being1–6 . Here we used data from 2,325 population-based studies, with measurements of height and weight from 71 million participants, to report the height and body-mass index (BMI) of children and adolescents aged 5–19 years on the basis of rural an...

Objectives: While ethnic minorities in Europe are disproportionally affected by cardiovascular disease (CVD), little is known about how general practitioners (GPs) perceive differences in risk or care needs across ethnic minority groups. Therefore, we explored GPs' views on whether ethnicity influences cardiovascular risk, whether a culturally sen...

Background and aims: Hypertension is an important global health burden with major differences in prevalence among ethnic minorities compared to host populations. Longitudinal research on ethnic differences in blood pressure (BP) levels provides the opportunity to assess the efficacy of strategies aimed at mitigating gaps in hypertension control. I...