Browsing Research Articles (Statistics) by Title

Browsing Research Articles (Statistics) by Title

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  • Management of proximal rectus femoris injuries-do we know what we're doing? : A systematic review 
    Bogwasi, Lone; Holtzhausen, Louis; Janse van Rensburg, Dina Christina; Jansen van Rensburg, Audrey; Botha, Tanita (Termedia Publishing, 2023-07-21)
    Rectus femoris (RF) injury is a concern in sports. The management RF strains/tears and avulsion injuries need to be clearly outlined. A systematic review of literature on current management strategies for RF injuries, ...
  • Managing travel fatigue and jet lag in athletes : a review and consensus statement 
    Janse van Rensburg, Dina Christina; Jansen van Rensburg, Audrey; Fowler, Peter M.; Bender, Amy M.; Stevens, David; Sullivan, Kieran O.; Fullagar, Hugh H.K.; Alonso, Juan-Manuel; Biggins, Michelle; Claassen-Smithers, Amanda; Collins, Rob; Dohi, Michiko; Driller, Matthew W.; Dunican, Ian C.; Gupta, Luke; Halson, Shona L.; Lastella, Michele; Miles, Kathleen H.; Nedelec, Mathieu; Page, Tony; Roach, Gregory Daniel; Sargent, Charli; Singh, Meeta; Vincent, Grace E.; Vitale, Jacopo A.; Botha, Tanita (Springer, 2021-10)
    Athletes are increasingly required to travel domestically and internationally, often resulting in travel fatigue and jet lag. Despite considerable agreement that travel fatigue and jet lag can be a real and impactful issue ...
  • A Markov chain model for geographical accessibility 
    Thiede, Renate Nicole; Fabris-Rotelli, Inger Nicolette; Debba, Pravesh; Cleghorn, Christopher W. (Elsevier, 2023-06)
    Accessibility analyses are conducted for a variety of applications, including urban planning and public health studies. These applications may aggregate data at the level of administrative units, such as provinces or ...
  • Maximum likehood estimation of parameter structures for the Wishart distribution using constraints 
    Strydom, H.F. (Hendrina Fredrika); Crowther, N.A.S. (Nicolaas Andries Sadie), 1944- (Elsevier, 2013-04)
    Maximum likelihood estimation under constraints for estimation in the Wishart class of distributions, is considered. It provides a unified approach to estimation in a variety of problems concerning covariance matrices. ...
  • Maximum likelihood estimation for multivariate normal samples : theory and methods 
    Strydom, H.F. (Hendrina Fredrika); Crowther, N.A.S. (Nicolaas Andries Sadie), 1944- (South African Statistical Association, 2012)
    Maximum likelihood estimation of parameter structures in the case of multivariate normal samples is considered. The procedure provides a new statistical methodology for maximum likelihood estimation which does not require ...
  • A maximum likelihood estimation procedure for binary data from cross-over studies 
    Matthews, G.B. (Glenda Beverley); Crowther, N.A.S. (Nicolaas Andries Sadie), 1944- (South African Statistical Association, 2011)
    A maximum likelihood estimation procedure is presented for the expected frequencies when modelling binary data from two-period cross-over studies. This procedure provides a simple approach to parameter estimation in ...
  • Meaningful batting averages in cricket 
    Van Staden, Paul Jacobus; Meiring, Albertus T.; Steyn, Johan A.; Fabris-Rotelli, Inger Nicolette (South African Statistical Association, 2010-11)
    In this paper we analyze and compare four different methods, designed to deal with the problem of an inflated batting average due to the presence of a high proportion of not-out innings. Batting records from the 2010 IPL ...
  • Measuring preservice teachers’ ethnocentrism : a South African case study 
    West, Joyce Phillis; Evans, Rinelle; Jordaan, J.C. (Joyce) (University of KwaZulu-Natal, School of Education and Development, 2021-12)
    The 21st century can be marked by growing ethnocentrism. Ethnocentrism in education could have detrimental effects on classroom practices and learner performance. With a quantitative, institutional case study research ...
  • Medical marijuana laws and marijuana use among U.S. adolescents : evidence from Michigan youth risk behavior surveillance data 
    Chen, Xinguang; Yu, Bin; Stanton, Bonita; Cook, Robert L.; Chen, Ding-Geng (Din); Okafor, Chukwuemeka (Sage, 2018-03)
    Research findings are inconsistent regarding a positive association between the passage of state medical marijuana laws (MML) and the adolescent access and the use of marijuana. We utilized a novel analytical approach to ...
  • The medico-legal investigation of abandoned fetuses and newborns—a review of cases admitted to the Pretoria Medico-Legal Laboratory, South Africa 
    Du Toit-Prinsloo, Lorraine; Pickles, Camilla Marion Sperling; Smith, Z.; Jordaan, J.C. (Joyce); Saayman, Gert (Springer, 2016-03)
    There is a dearth of literature on the extent of fetal or newborn abandonment or “dumping” and the medico-legal investigation procedures these cases require. This is despite the fact that these occurrences are a world-wide ...
  • Meta-analysis of effect sizes reported at multiple time points using general linear mixed model 
    Musekiwa, Alfred; Manda, S.O.M. (Samuel); Mwambi, Henry G.; Chen, Ding-Geng (Din) (Public Library of Science, 2016-10-31)
    Meta-analysis of longitudinal studies combines effect sizes measured at pre-determined time points. The most common approach involves performing separate univariate metaanalyses at individual time points. This simplistic ...
  • Meta-analysis of two studies with random effects? 
    Chen, Ding-Geng (Din); Fang, Di; Wilson, Jeffrey R. (Elsevier, 2017-07)
    A meta-analysis (MA) combines similar studies resulting in a larger number of subjects to improve the degree of belief in the significance declared. Its major purpose is to increase the number of observations and the ...
  • Metabolic syndrome at 6 weeks after delivery in a cohort of pre-eclamptic and normotensive women 
    Ntlemo, P.; Cronje, Tanita; Soma-Pillay, Priya (Health and Medical Publishing Group, 2021-04)
    BACKGROUND. The association between pre-eclampsia and the subsequent development of metabolic syndrome has not been well documented in low- and middle-income countries. OBJECTIVES. To compare the prevalence of metabolic ...
  • Metric evaluation of the anterior nasal spine to estimate sex and population group in South African individuals 
    Davidson, Christy Lana; De Klerk, Johan; Matejovsky, Zina; Fabris-Rotelli, Inger Nicolette; Uys, Andre (Springer, 2024)
    INTRODUCTION : The anterior nasal spine is a pointed, midline projection of the maxilla. This bony structure dictates the overlying soft tissues providing the phenotypic features of the nose and upper lip and determines ...
  • Microporous polyolefin strands as controlled-release devices for mosquito repellents 
    Mapossa, António Benjamim; Sibanda, Mthokozisi Mayibongwe; Sitoe, Alcides Everildo José; Focke, Walter Wilhelm; Braack, L.E.O.; Ndonyane, Cyril; Mouatcho, Joel Claude; Smart, Jansie; Muaimbo, Herminio; Androsch, Rene; Loots, Mattheus Theodor (Elsevier, 2019-03)
    The main vectors of malaria in Africa, i.e. An. arabiensis, An. gambiae s.s. and An. funestus, are attracted by human foot odour and they tend to bite victims in the ankle area. Hence, affordable mosquito-repellent ...
  • Mid-ATR-FTIR spectroscopic profiling of HIV/AIDS sera for novel systems diagnostics in global health 
    Sitole, Lungile J.; Steffens, Francois E.; Kruger, T.P.J. (Tjaart); Meyer, Debra (Mary Ann Liebert, 2014)
    Please read abstract in the article.
  • Mindfulness, psychological well-being and doping in talented young high-school athletes 
    Nolte, Kim; Steyn, B.J.M. (Barend Johannes Marthinus); Kruger, P.E. (Pieter Ernst); Fletcher, Lizelle (Southern African Alliance for Sport Science, Physical Education and Recreation, 2016)
    The primary aim of this research was to determine how mindfulness and psychological well-being relate to the propensity to use Performance-Enhancing Drugs (PEDs) in a sample of talented young athletes. A secondary aim was ...
  • Modeling right-skewed financial data stream : a likelihood inference based on the generalized Birnbaum–Saunders mixture model 
    Naderi, Mehrdad; Hashemi, Farzane; Bekker, Andriette, 1958-; Jamalizadeh, Ahad (Elsevier, 2020-07)
    Finite mixture models have recently been considered for analyzing positive support economical data streams with non-normal features. In this paper, a new mixture model based on the novel class of generalized Birnbaum–Saunders ...
  • Modelling bimodal data using a multivariate triangular-linked distribution 
    De Waal, Daan; Harris, Tristan; De Waal, Alta; Mazarura, Jocelyn Rangarirai (MDPI, 2022-07-06)
    Bimodal distributions have rarely been studied although they appear frequently in datasets. We develop a novel bimodal distribution based on the triangular distribution and then expand it to the multivariate case using ...
  • Modelling of correlated soil animals count data 
    Debusho, Legesse Kassa; Sileshi, Gudeta W. (South African Statistical Association, 2012-11)
    Ecological studies naturally result in correlated data. Ignoring these correlations can result in biased estimation of ecological effects jeopardizing the integrity of the scientific inference. Mixed effects models are ...