• T-cell phenotypes and systemic cytokine profiles of people living with HIV admitted to hospital with COVID-19 

  Van der Mescht, Mieke Adri; Steel, Helen C.; De Beer, Zelda; Masenge, Andries; Abdullah, Fareed; Ueckermann, Veronica; Anderson, Ronald; Rossouw, Theresa M. (MDPI, 2024-11)

  Whether SARS-CoV-2 infection leads to a higher mortality and morbidity in people living with HIV (PLWH) in Africa remains inconclusive. In this study, we explored the differences in the T-cell phenotypes between people ...
• A study of the incidence of the corona mortis within a South African patient sample using computerized tomographic angiography 

  Naicker, Jade; Tshabalala, Zithulele Nkosinathi; Janse van Rensburg, Jacques; Masenge, Andries; Modisane, Obakeng; Matshidza, Steven; Mogale, Nkhensani (Elsevier, 2024-12)

  INTRODUCTION: Retropubic hematomas are a common development in cases of pelvic ring trauma and post-operative repair of fractures to the anterior column of the pelvis. Early detection and diagnosis of such events using computed ...
• Statistical methods in the analysis of multicentre HIV randomized controlled trials in the African region: a scoping review 

  Mazinu, Mikateko; Gwebushe, Nomonde; Manda, S.O.M. (Samuel); Reddy, Tarylee (BMC, 2025-01)

  BACKGROUND : The majority of phase 3 clinical trials are implemented in multiple sites or centres, which inevitably leads to a correlation between observations from the same site or centre. This correlation must be carefully ...
• Robust negative binomial regression via the Kibria-Lukman strategy : methodology and application 

  Lukman, Adewale F.; Albalawi, Olayan; Arashi, Mohammad; Allohibi, Jeza; Alharbi, Abdulmajeed Atiah; Farghali, Rasha A. (MDPI, 2024-09-20)

  Count regression models, particularly negative binomial regression (NBR), are widely used in various fields, including biometrics, ecology, and insurance. Over-dispersion is likely when dealing with count data, and NBR ...
• Ridge-type pretest and shrinkage estimation strategies in spatial error models with an application to a real data example 

  Al-Momani, Marwan; Arashi, Mohammad (MDPI, 2024-02)

  Spatial regression models are widely available across several disciplines, such as functional magnetic resonance imaging analysis, econometrics, and house price analysis. In nature, sparsity occurs when a limited number ...
• Modified Cox models : a simulation study on different survival distributions, censoring rates, and sample sizes 

  Maharela, Iketle Aretha; Fletcher, Lizelle; Chen, Ding-Geng (Din) (MDPI, 2024-09-18)

  The classical Cox model is the most popular procedure for studying right-censored data in survival analysis. However, it is based on the fundamental assumption of proportional hazards (PH). Modified Cox models, stratified ...
• Skew-symmetric generalized normal and generalized t distributions 

  Rad, Najmeh Nakhaei; Salehi, Mahdi; Mehrali, Yaser; Chen, Ding-Geng (Din) (MDPI, 2024-11)

  In this paper, we introduce the skew-symmetric generalized normal and the skewsymmetric generalized t distributions, which are skewed extensions of symmetric special cases of generalized skew-normal and generalized skew-t ...
• Homogeneously weighted moving average control charts : overview, controversies, and new directions 

  Malela-Majika, Jean-Claude; Human, Schalk William; Chatterjee, Kashinath (MDPI, 2024-03)

  The homogeneously weighted moving average (HWMA) chart is a recent control chart that has attracted the attention of many researchers in statistical process control (SPC). The HWMA statistic assigns a higher weight to ...
• Adapting and evaluating deep-pseudo neural network for survival data with time-varying covariates 

  Whata, Albert; Nasejje, Justine B.; Rad, Najmeh Nakhaei; Mulaudzi, Tshilidzi; Chen, Ding-Geng (Din) (Taylor and Francis, 2025)

  The Extended Cox model provides an alternative to the proportional hazard Cox model for modelling data including time-varying covariates. Incorporating time-varying covariates is particularly beneficial when dealing with ...
• Schneiderian first rank symptoms significantly predict a dissociative disorder diagnosis in psychiatric in-patients 

  Kruger, Christa; Fletcher, Lizelle (Taylor and Francis, 2025)

  Previous empirical studies on the relationship between psychotic symptoms and dissociative disorders focused on auditory hallucinations only or employed limited statistical analyses. We investigated whether the frequency ...
• Hotelling T2 control chart based on minimum vector variance for monitoring high-dimensional correlated multivariate process 

  Oyegoke, Odunayo Adiat; Adekeye, Kayode Samuel; Olaomi, John Olutunji; Malela-Majika, Jean-Claude (Wiley, 2025)

  Please read abstract in the article.
• Rank-based EWMA TBEA control chart 

  Figueiredo, Fernanda Otilia; Castagliola, Philippe; Malela-Majika, Jean-Claude (Wiley, 2025)

  Recently, considerable attention has been paid to the development of time between events and amplitude (TBEA) control charts. Almost all existing TBEA charts are of a parametric type. Parametric TBEA charts have the ...
• Closed-form expressions of the run-length distribution of the nonparametric double sampling precedence monitoring scheme 

  Magagula, Zwelakhe; Malela‑Majika, Jean‑Claude; Human, Schalk William; Castagliola, Philippe; Chatterjee, Kashinath; Koukouvinos, Christos (Springer, 2024)

  A significant challenge in statistical process monitoring (SPM) is to find exact and closed-form expressions (CFEs) (i.e. formed with constants, variables and a finite set of essential functions connected by arithmetic ...
• Epidemiology and clinical characteristics of football injuries among academy players in Ghana 

  Kwakye, Samuel Koranteng; Mostert, Karien; Garnett, Daniel; Masenge, Andries (BMJ Publishing Group, 2024-11)

  OBJECTIVE: To determine the epidemiology and clinical characteristics of match and training injuries among football players at an academy in Ghana. METHODS: In this prospective observational study, we followed 80 youth ...
• Individual and community‑level factors associated with adequate antenatal care service utilization in sub‑Saharan Africa 

  Fenta, Setegn Muche; Fenta, Haile Mekonnen; Yilema, Seyifemickael Amare; Yilema, Seyifemickael Amare; Chen, Ding-Geng (Din); Mekonnin, Amsalu Worku (BMC, 2024-10-15)

  BACKGROUND Sub-Saharan Africa (sSA) continues to rank among the regions in the world with the highest rates of maternal mortality and the lowest rates of utilization of maternal health care. The risk of death for women ...
• One-year anthropometric follow-up of South African preterm infants in kangaroo mother care : which early-life factors predict malnutrition? 

  Nel, Sanja; Wenhold, Friedeburg Anna Maria; Botha, Tanita; Feucht, Ute Dagmar (Wiley, 2024-04)

  BACKGROUND : Preterm infants often have poor short- and long-term growth. Kangaroo mother care supports short-term growth, but longer-term outcomes are unclear. METHODS : This study analysed longitudinally collected ...
• Supporting the measurement of sustainable development goals in Africa : geospatial sentiment data analysis 

  Karakani, Hossein Masoumi (Institute of Electrical and Electronics Engineers, 2024-03)

  In 2015, the United Nations (UN) launched an ambitious set of 17 Sustainable Development Goals (SDGs) to end poverty, protect the planet, and ensure prosperity for all as part of the 2030 Agenda for Sustainable Development. ...
• Spatial prediction of poverty in Gauteng province (South Africa) in-between Censuses using land use datasets 

  Katumba, Samy Kabangu; Coetzee, Serena Martha; Stein, Alfred; Fabris-Rotelli, Inger Nicolette (Wiley, 2024-11)

  To realize the first sustainable development goal of ending “poverty in all its forms everywhere,” local governments in South Africa need to implement informed targeted policy interventions based on up-to-date data and ...
• The effect of forced-air warming blanket position during spinal surgery on patients’ intra-operative body temperature 

  Joubert, Natasha; Filmalter, Cecilia Jacoba; White, Zelda; Masenge, Andries (Elsevier, 2024-12)

  BACKGROUND : The use of body-warming systems is recommended by international anaesthesia societies for patients undergoing surgery. Limited research is however available on the influence of positioning of forced-air warming ...
• Enhanced distribution-free Cucconi schemes based on runs : an application to the surveillance of daily average customer service time 

  Chong, Zhi Lin; Teoh, Wei Lin; Yeong, Wai Chung; Malela-Majika, Jean-Claude; Khoo, Michael B.C. (Elsevier, 2024-11)

  The measurement of daily average customer service times in a service centre holds paramount importance as it serves as a key metric for assessing service performance and quality. It is essential to ensure that the average ...

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