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The Performance Of Machine Learning Algorithms In Predicting Under-Five Anaemia In Tanzania, Henry Ofori Duah, Derrick Nyantakyi Owusu, Godwin G. Duah, Paul Shidende

College of Nursing Faculty Research and Publications

Aim

Anaemia in children under five remains a major public health concern, contributing significantly to global child morbidity and mortality. With the rise of machine learning (ML), novel opportunities exist to model and predict anaemia more effectively. This study aimed to evaluate and compare the performance of five ML algorithms in predicting anaemia among under-five children in Tanzania.

Methods

We conducted a secondary data analysis using the 2017 Tanzania Malaria Indicator Survey (TMICS). The dataset (n = 5906) was randomly split into training (70%) and test (30%) sets. Five ML algorithms, Linear Discriminant Analysis (LDA), Logistic Regression, Random Forest (RF), …

Ai For Prognosis Among People Living With Hiv: Protocol For A Systematic Review And Meta-Analysis, Degninou Yehadji, Markus Hofmann, Petros Isaakidis, Smaila Alidou, Olushina Ayo Junior Ale, Kofivi Mawouko Yena, Kodjo Guidigan, Geraldine Gray, Nadjime Pindra, Gayo Diallo

Research Outputs: 2025-Present

Background: Advanced HIV disease remains a major global health concern, with nearly 40.8 million people living with HIV as of 2024. Antiretroviral therapy has improved outcomes, but its success depends on timely intervention, adherence, and retention in care. AI, including machine learning and deep learning, offers promising tools for prognostic modeling that could support clinical decision-making and personalized treatment. Existing syntheses, however, have been largely narrative and have not systematically evaluated the performance, risk of bias, reporting quality, or clinical readiness of AI-based prognostic models, leaving a critical gap in understanding their validity and applicability. Objective: This study aims to …

A Comparison Of F/Taf And F/Tdf As Hiv Pre-Exposure Prophylaxis In A Predominantly Cisgender Women Population In East And South Africa: A Randomised, Factorial, Non-Inferiority Trial, Sheena Mccormack, David Dunn, Sylvia Kusemererwa, Patricia Munseri, Nishanta Singh, Wiston William, Gertrude Mutonyi, Henry Bern, Lauriane Goldwirt, Cherry Kingsley, Arne Kkroidl, Christian Holm Hansen, Song Ding, Rachel Kawuma, Mary Amondi, Ubaldo Bahemuka, Deus Buma, Daniel Clutterbuck, Zakir Gaffoor, Angus Jennings, Agricola Joachim, Ayoub Kakande, Berna Kalanzi, Abisai Kisinda, Mabela Matsoso, Thomas Miller, Neetha Mmedsci Morar, Jacqueline Musau, Jane Nabbuto, Ayanda Nzuza, Doreen Pamba, Simona Salomone, Thandiwe Sithole, Edith Tarimo, Kubashni Woeber, Kundai Chinyenze, Glenda Gray, Eligius Lyamuya, Muhammad Bakari, Said Aboud, Lucas Maganga, Gustavo Doncel, Janet Seeley, Jonathan Weber, Pontiano Kaleebu, Julie Fox, Eugene Ruzagira, On Behalf Of The Prepvacc Study Group

CONRAD Publications

Background:

F/TAF was shown to be non-inferior to F/TDF as pre-exposure prophylaxis (PrEP) in men, but approval was not extended to cisgender women. We report the results of PrEPVacc, in which a predominantly female population was randomly allocated to receive daily oral F/TDF or F/TAF for ∼6 months within a HIV-1 prophylactic vaccine trial.

Setting:

Five study sites in three African countries (Uganda, Tanzania, South Africa).

Methods:

The two regimens were compared by the averted infections ratio (AIR) - the proportion of infections averted by F/TAF relative to F/TDF. The counterfactual HIV incidence, an essential component of this metric, was …

Cross-Domain Antimicrobial Resistance In Poultry Farming: A One Health Assessment Of Antimicrobial Use And Multidrug Resistance In Kiambu County, Kenya, Ann Kangai Munene, Peter Muiruri Mwangi, Lilly Caroline Bebora, Christine Minoo Mbindyo, John Muthini Maingi

All Peer-Reviewed Publications

Background and Aim: Antimicrobial resistance (AMR) has emerged as a major One Health threat driven by inappropriate antimicrobial use (AMU) in humans, animals, and the environment. Poultry production is recognized as a key reservoir of antimicrobial-resistant bacteria, yet few studies in Kenya examine AMU and AMR across interconnected human–animal–environment domains. This study assessed AMU patterns among poultry farmers in Kiambu County and characterized phenotypic resistance in Escherichia coli and Enterococcus spp. isolated from humans, chickens, and chicken environments. Materials and Methods: A cross-sectional study was conducted from May to September 2024, involving 102 poultry farms. Farm demographics and AMU data …

The Central Bank Supervision Stringency On Bank Stability, Sara Eliufoo, Judika King'ori

Tanzanian Economic Review

This study examines the relationship between central bank supervision stringency and bank stability in Tanzania, focusing on 45 licensed banks. Specifically, it assesses the influence of regulatory capital stringency, loan loss provisioning stringency, and loan diversification stringency on bank stability. Guided by Agency Theory and Credit Risk Management Theory, the study adopts a quantitative research design. Primary data were collected using structured questionnaires administered to 225 bank employees, including credit, finance, internal audit, risk, compliance, and human resource officers. Data were analyzed using Structural Equation Modelling (PLS-SEM) via SmartPLS 4.0. Rigorous data screening addressed missing values, outliers, and measurement errors. …

Adapting To Price Fluctuations: A Case Study Of Street And Market Vendors In Tarlac City, Gavie A. Mariñas, Roselyn V. Magapuro, Ivan Karlo S. Pating

Sinaya: A Philippine Journal for Senior High School Teachers and Students

This study examined the experiences and adaptive strategies of vendors in response to price fluctuations using a qualitative case study approach. Focusing on a bounded case of six purposively selected street and market vendors, the study identified patterns of resilience, negotiation, and vulnerability by emphasizing how vendors deal with uncertainty in a fluctuating economic environment. One of the most significant findings was a considerable drop in sales across vendors following price increases, resulting in fewer client visits. Despite their resourcefulness, vendors have challenges due to limited government assistance, which frequently forces them to rely primarily on their own abilities. Based …

Is Uganda’S Trade Complementary With Its Eac Partners?, Aaron Ecel, Timothy Esemu, Matthias S. Mulumba, Jimmy O. Otim

Tanzanian Economic Review

This study evaluates the extent to which Uganda’s export profile aligns with the import needs of its East African Community partner states, with the aim of identifying opportunities for enhanced regional trade. Using sectoral trade data from the International Trade Centre and UN Comtrade, the study applies the Trade Complementarity Index (TCI) and Trade Intensity Index (TII) to analyze Uganda’s trade flows with EAC partners between 2013 and 2023. The results show that Uganda’s trade complementarity with EAC partners remains generally low across several key sectors, including prepared foodstuffs and chemicals, despite significant regional demand and preferential market access. Trade …

External Debt And Economic Growth In Sub-Saharan African Hipcs: Linear And Nonlinear Dynamics, Swaliki Kisige Isabirye, John Mutenyo, Oryema John Bosco

Tanzanian Economic Review

Abstract

Economic growth in Highly Indebted Poor Countries (HIPCs) in Sub-Saharan Africa remains heavily influenced by external financing conditions, making the role of external public debt a critical empirical and policy issue. Governments in the region depend on external borrowing to supplement limited domestic resources, yet the extent to which such debt supports or constrains economic growth is still contested. This study therefore examines the linear and nonlinear impact of external public debt on economic growth using a panel of 20 HIPCs covering the period 2000-2024. Employing the Pooled Mean Group (PMG) estimator within a dynamic ARDL framework, the analysis …

Rainfall Variability And Dynamics Of Non-Farm Participation: Evidence From Rural Farmers In Tanzania, Gloria Benedict Mapunda, Razack Bakari Lokina, Onesmo Selejio, Remidius Denis Ruhinduka

Tanzanian Economic Review

Rainfall variability has been and will continue to affect the socio-economic welfare of developing countries. Substantial evidence exists on agricultural-based adaptation practices, but less work is done in examining non-agricultural adaptation practices and their dynamics in response to rainfall variability. This paper investigates the effect of rainfall variability on the dynamics of entry into, sustained non-farm participation and exit from non-farm participation for rural farmers. Using the National Panel Survey for 2008, 2010, and 2010, the Pooled cross-section multinomial logit was employed as an approach to estimation. Results show that negative rainfall deviations reduce the likelihood of farmers’ entry into …

Exporting And Productivity: Evidence From Firm-Level Data In Tanzania, Josephat J. Hongoli, Vincent Leyaro

Tanzanian Economic Review

Using firm-level data (2006 – 2023), this paper examines the interactions between export behavior and productivity among manufacturing firms in Tanzania.  Specifically, the study tests the hypothesis that more productive firms self-select into export markets and benefit from global markets through learning-by-exporting and economies of scale. The study employs a two-step procedure to estimate firm-level productivity and compares exporting firms with non-exporting firms, controlling for observable heterogeneity. The findings of the study reveal a high and significant productivity premium of approximately 32 percent, which is consistent with the existing empirical literature. The results remain robust even when considering partial productivity …

Women's Empowerment, Female Genital Mutilation And Domestic Violence In Tanzania: Evidence From The Tanzania Demographic And Health Survey 2022, Monica Sebastian Kauky, Hinju Gabriel

Tanzanian Economic Review

Female genital mutilation/cutting (FGM/C) remains an important public health and human rights issue in Tanzania. This study uses data from the 2022 Tanzania Demographic and Health Survey (TDHS) and applies logit and Tobit models to investigate the relationships between women’s empowerment, FGM/C, and domestic violence. The results indicate that approximately 3 percent of women had undergone FGM/C, while 44 percent had experienced domestic violence. Women’s educational attainment and control over land are also important factors associated with the prevalence of FGM/C. The findings further show a strong relationship between women’s autonomy and their exposure to domestic violence, particularly in relation …

Adapting To Aridity: Crop Production Trends Among Smallholder Farmers In Iramba District, Tanzania, Nashokigwa Shalua, Digna Wolfram Mlengule, Johnstone M. Andrea

Tanzanian Economic Review

Increasing crop production amid recurrent droughts remains a critical challenge for smallholder farmers in the semi-arid Iramba District; however, empirical evidence on crop production remains scarce. This paper analysed trends in crop production in Iramba District from 1995 to 2024. Mixed methods were used, and data were collected through structured interviews, focus group discussions, field observations, in-depth interviews and document reviews. Quantitative data were analysed using descriptive statistics while qualitative data were thematically analysed. The results indicate that 84.2% (n=95) of the households showed an increase in crop yields despite concurrent severe drought. Sunflower, maize, bulrush millet, and sorghum were …

Design Of A Sequential Logic Control System For Water Recycling In Car Wash Operations For Minimising Utility Costs, Enock W. Nshama, Mussa Iddi Mgwatu

Tanzania Journal of Engineering and Technology (TJET)

The car wash sector in Tanzania is expected to expand in the next few years, since the trend of imported cars is increasing. However, the traditional method of washing cars is subjected to water overuse and environmental pollution. This study presents a design of water recycling sequential logic control system to come up with a cost-effective car wash operation aimed at effectively utilising water and electricity resources. Data were collected at 78 car wash stations in Dar es Salaam region to determine water and electricity costs. Data were analysed using MS Excel and Minitab to establish the trend of utility …

Techno-Economic Analysis Of Captive Solar Power Systems For Tanzania’S Manufacturing Sector: Barriers, Opportunities, And Feasibility, Edson Uhale, Sarah P. Ayeng'o

Tanzania Journal of Engineering and Technology (TJET)

This study provides a comprehensive techno-economic analysis of the barriers, opportunities, and feasibility of adopting captive solar photovoltaic (PV) systems in Tanzania’s industrial manufacturing sector. Despite Tanzania’s high solar irradiation potential, averaging 4.5 to 7.0 kWh/m²/day, the uptake of captive solar systems remains minimal, with only 2.3 percent of surveyed firms currently using solar energy, primarily for non-productive uses such as security lighting. Using a mixed-methods approach, data were collected from 43 manufacturing firms in the Dar es Salaam and Pwani regions through structured questionnaires, supported by PVSyst simulations and financial modelling to assess two system configurations: grid-connected PV systems …

From Gap To Growth? Examining Institutional And Legal Efforts To Bridge Gender Disparities In Higher Learning: The Case Of University Of Dar Es Salaam, Hadija K. Mwendah, Bernadeta Killian

Journal of Humanities and Social Sciences

Tanzania has adopted several institutional and legal frameworks to advance gender equality in higher learning. These include, national gender policies, affirmative action provisions and establishment of gender mainstreaming structures at universities. This paper examines how these frameworks have been implemented at the University of Dar es Salaam (UDSM) and the extent to which they have bridged gender disparities in academia. Using secondary data and drawing from feminist institutionalism, the study explores how formal rules and informal practices interact to influence gender outcomes. Findings reveal that while institutional mechanisms such as the UDSM Gender Policy, Institute for Gender Studies, Gender Desks …

Documenting Death: Maternal Mortality And The Ethics Of Care In Tanzania (Adrienne E. Strong 2020), Luluk Oktavia, Megawati Sukarno

Paradigma: Jurnal Kajian Budaya

In recent decades, global efforts to reduce maternal mortality have become a primary focus in health development agendas. However, challenges in providing quality healthcare remain complex, especially in resource-limited countries. Adrienne E. Strong’s book, Documenting Death: Maternal Mortality and the Ethics of Care in Tanzania, offers an ethnographic perspective on the relationship between bureaucratic structures, resource constraints, and healthcare practices in Tanzania. This review examines Strong’s key concepts, such as good enough care, documented care, and fierce care, which highlight the ethical dilemmas faced by healthcare workers in delivering care under administrative pressures and limited facilities. The critique of the …

A Solar Pv System For Industrial Application- A Case Study Of A Cement Industry In Tanzania, Santos Kihwele

Tanzania Journal of Engineering and Technology (TJET)

This study presents an implementation of the largest behind-the-meter solar photovoltaic (PV) system for a cement industry in Tanzania. The project aims to supply energy for the industry’s own use, without any energy injection into the utility grid, for the purposes of cutting energy-related expenditure and reducing reliance on the utility grid. The project also aims to contribute to the efforts towards the application of renewable and alternative energy sources as a means to reducing carbon footprints, towards achieving the net-zero CO₂ emission goal. A comprehensive site assessment was conducted, analyzing factors such as location, land availability, climate data, …

The Use Of Local Materials For The Interior Quality Of Swahili Building Design In Tanzania, Luiana Makundi, Jacob Lutta

Tanzania Journal of Engineering and Technology (TJET)

Swahili architecture in Tanzania is recognized by spatial capacity to adapt environmental changes. This research explores the role of locally available materials in shaping the interior quality by focusing on functional, aesthetic appeal and supporting sustainable environment. A mixed-methods approach was applied which, involves field surveys, case study and interviews with different local professionals in building industry. Dar-es-Salaam was used as a case study area that was critically analysed to identify construction practices and applications of local materials in building interior spaces. A particular focus was placed on materials durability, aesthetic, ecological, environmental balance and thermal efficiency which seems to …

Optimization Of Welding Parameters For Carbon Steel Fabrication: A Trade-Off Between Tensile Strength And Heat-Affected Zone, Melkiory B. Njawala, Simon I. Marandu, Enock W. Nshama

Tanzania Journal of Engineering and Technology (TJET)

This study focused on optimizing gas metal arc welding (GMAW) parameters for AISI 1045 carbon steel to balance the ultimate tensile strength (UTS) and heat affected zone (HAZ) size of the weldment. Using a full factorial design of experiments (27 trials), the influence of welding current, arc voltage, and travel speed on UTS and HAZ size of AISI 1045 carbon steel weldments were investigated. From the analysis of results, using Analysis of variance (ANOVA) technique, the results revealed that current, travel speed and arc voltage contributed 74.41%, 19.05% and 0.04%, respectively, to the total percentage of variations on UTS data. …

Combined Optimisation Of Machining Parameters, Tool Wear, Dimensional Errors And Quality Deviations In Multi-Pass Turning Operations, Mussa I. Mgwatu

Tanzania Journal of Engineering and Technology (TJET)

Measurements of on-line tool wear and part dimensional accuracy in machining operations are not readily available in machining shop floor because they involve higher investment such that the decisions of tool wear and part quality for intermediate cutting passes cannot be justified. This paper demonstrates how the optimisation of machining parameters can be made together with tool wear and part quality for turning operations. Two optimisation models were developed for maximum material removal rate and minimum production cost. A theoretical framework was initially presented before the two models were formulated. Input data for the models were adopted from previous studies …

Comparative Competitiveness Of Ugandan And Ethiopian Coffee In International Markets, Aaron Ecel, Robert Muwanga, Bob Ssekiziyivu, Oliver Nakanwagi

Business Management Review

Purpose: This study compares the global competitiveness of Ugandan and Ethiopian coffee exports, analyzing export performance, market dynamics, and structural determinants to inform policy interventions.

Design/Methodology/Approach: Using quantitative analysis of 2012-2023 trade data from UN Comtrade and ITC Trade Map, we apply Constant Market Share Analysis (CMSA) and Revealed Comparative Advantage (RCA) metrics.

Findings: Uganda demonstrated stronger growth in export value (156% from 2012–2023) and quantity (7% annual growth), driven by commodity composition effects (72.8%). However, its lower unit values ($2,578/unit) reflect reliance on bulk Robusta exports. Ethiopia, despite stagnant volume growth, commands premium prices ($5,186/unit) due to specialty Arabica …

Multi-Criteria Decision Making Methods In The Organisations' Maturity Assessment: Prisma And Delphi Techniques Perspectives, Jailos Mrisho Mzumile, Victoria Mahabi, Ismail W. R. Taifa

Tanzania Journal of Engineering and Technology (TJET)

Researchers often find it challenging to identify the appropriate Multi-Criteria Decision Making Methods (MCDM) to employ in various research areas that involve prioritising conflicting alternatives or criteria. A systematic literature review was conducted using the PRISMA technique to determine the most frequently and commonly employed MCDM methods in assessing organisational maturity across its functional areas. A total of 120 articles were identified for review, and a bibliometric analysis was conducted to map the relationships within the identified articles using VOSviewer 1.6.20 software. Moreover, frequent content analysis was performed to determine the most frequently employed MCDM methods in assessing an organisation’s …

Environmental Health Risks To Children In Sub-Saharan Africa: A Scoping Review Of Evidence And Gaps In Global Interventions, Tadius C. Chitambwe, Dewi Susanna

Jurnal Epidemiologi Kesehatan Indonesia

Sub-Saharan Africa’s (SSA) children experience a disproportionate burden of environmental health risks, contributing to over half of global under-five deaths despite representing only 27% of live births ¹. This scoping review synthesised evidence from sixty-seven (67) eligible studies (2010–2025) to map out environmental exposures affecting children (0–18 years) in Sub-Saharan Africa, and to identify gaps in global interventions. Included studies focused on children (0-18 years) in SSA, addressed one or more of the four predefined environmental exposure domains (air pollution, WASH, toxic chemicals, climate-related risks), and reported on child health outcomes or interventions. Guided by the PRISMA and Arksey …

The Analysis Of Non-Newtonian Blood Flow Through An Atherosclerotic Artery In The Presence Of Body Acceleration, Radiation Effect And Magnetic Field, Johnson N. Katabwa

Tanzania Journal of Science

The unsteady analysis of two-dimensional laminar flow of the non-Newtonian blood through an atherosclerotic artery in the presence of body acceleration, radiation effect and magnetic field has been studied. The blood flow has been assumed to satisfy the Herschel-Bulkley fluid model characteristics. The two- dimensional model equations have been developed from the physical laws of continuity, momentum and energy conservation. These equations are transformed to non-dimensional form and solved numerically using explicit finite difference method under suitable radial coordinate transformation. The study findings show that, the presence of body acceleration increases both velocity and temperature profiles of the blood in …

Valorization Of Palm Oil Wastes Into Oyster Mushrooms (Pleurotus Hk-37) And Biogas Production, Aneth B. David, Anthony M. Mshandete

Tanzania Journal of Science

The study explored the potential of co-production of oyster mushroom Pleurotus HK-37 and biogas from palm oil waste fractions to add value and mitigate environmental impact. Nine different blends of waste fractions were subjected to mushroom production. The highest mushroom yield and biological efficiency were obtained from a blend that combined equal amounts of palm mesocarp fiber (PMF) and empty fruit bunch (EFB) waste fractions supplemented with 1% palm oil mill effluent (POME) and sediments (SD). The spent mushroom substrates (SMS) were used in biogas production, compared to fresh waste blends, biogas volume was higher across all but two treatments. …

Short- Term Effects Of Cypermethrin Pesticide On Nutrient Levels And Microbial Communities In Tropical Soil Of Uganda, Mama N. Simon

Tanzania Journal of Science

Cypermethrin is an insecticide widely used by farmers in Uganda to control pests and diseases. The widespread use leads to biomagnification, affecting humans and the ecosystem. This study examined the short-term effects of cypermethrin on soil macronutrients (N, P, K), meso-nutrients (Ca, Mg), and microbial communities (bacteria, fungi, and actinomycetes) in tropical Ugandan soils. Soil samples treated with cypermethrin and control were collected and analysed using standard methods of flame photometry for potassium (K), atomic absorption spectroscopy for calcium and magnesium, Wet-acid oxidation for nitrogen and phosphorus, and standard plate count techniques for microbial populations. The study used a Randomized …

Food Safety Concerns: A Review On Pathogenic Microbes Associated With Common Edible Insects, Anitha Philbert

Tanzania Journal of Science

This review explored the pathogenic microbes associated with common edible insects. With rising human populations and fluctuating food supplies, edible insects offer a rich source of protein, vitamins, and minerals and are culturally accepted in many regions. Despite their nutritional benefits, knowledge on microbial hazards associated with edible insects is fragmented. The review focuses on commonly consumed species, including Tenebrio molitor, Zophobas morio, Acheta domesticus, Gryllus bimaculatus, Locusta migratoria, Ruspolia differens, Bombix mori, Bunaea alcinoe, and Oryctes monoceros. A total of 43 pathogenic bacteria and 20 pathogenic fungi linked to these edible insect species were identified. The most frequently reported …

Geochemical Fingerprinting Of Tanzanian Uranium Deposits: The Insights Of Ree Ratios (La/Ce, Nd/Ce, And Sm/Nd) As A Provenance Tool, Lazaro H. Meza, John W. Kondoro, Iyabo T. Usman, Najat K. Mohammed, Titus A. Msagati, Mwingereza John Kumwenda, Mohamed S. Mazunga

Tanzania Journal of Science

Accurate uranium provenance determination is crucial for nuclear non-proliferation and environmental protection, yet a forensic-level geochemical framework for Tanzanian uranium deposits has been lacking. This study establishes a robust analytical method using forty-five samples from three major deposits (Mkuju, Manyoni, and Bahi), analyzing elemental compositions, particularly Rare Earth Elements (REEs), via ICP-MS, and validating results using Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA). Despite their proximity, the deposits exhibit distinct geochemical signatures as revealed by key REE ratios and anomalies. Mkuju (mean La/Ce 1.17, Nd/Ce 0.62, Sm/Nd 0.56) is characterized by a positive Europium (Eu) anomaly and heavy …

Decolonizing Knowledge As Epistemic Justice: Key Conceptual Tendencies From The Global South, Richard Sambaiga

Tanzania Journal of Sociology

The project of decolonising knowledge has gained renewed prominence as scholars confront enduring epistemic injustices and structural inequalities embedded in global systems of knowledge production. Situated within long-standing anticolonial and postcolonial intellectual struggles, this article interrogates key conceptual dilemmas that continue to shape contemporary debates on decoloniality. Adopting a commentary orientation, it examines what it means to decolonise knowledge by engaging the historical foundations of decolonial thought alongside contemporary critiques that expose the persistence of epistemic hierarchies within modern academic institutions. The article argues that, without conceptual clarity, the decolonial project risks becoming analytically misguided and politically misdirected, potentially reproducing …

Theorizing ‘Magwangala’ As An Unorthodox Livelihood In Geita, Tanzania, Albert Tibaijuka

Tanzania Journal of Sociology

The increasing contestation of Magwangala as a livelihood in Geita, Tanzania, invokes a scholarly desire to further the constitution of the term beyond its traditional constructs. Following the present framing of magwangala as a disruptive, hazardous, contentious, and risky engagement; including the sanctions against it and the disparaging remarks upsurging the oppression of its actors, an attempt to advance its comprehension is of paramount importance. Given the nature of Magwangala business and the evident ramifications, its contestation is inevitable and unlikely to yield a uniform understanding. This paper, therefore, draws from the grueling life experiences endured by magwangala dealers in …