2018: 9
2025: 16
65th annual conference of the South African Statistical Association hosted by the University of the Western Cape, November 2024, Stellenbosch.
Presenter/Authors: Xabsa Mohumed, Retha Luus, Tayla Wannenberg and Esmé Jordaan
Title: “Analysing exercise-associated muscle cramping in ultramarathon runners using predictive modelling.”
Annual conference of The Academy of Pharmaceutical Sciences of South Africa, September 2023, Durban.
Presenter/Authors: Lara van Niekerk, Michelle Viljoen, Retha Luus, and Salome Kruger
Title: “The effect of Dolutegravir-based antiretroviral therapy on the body weight of HIV-infected adult female patients.”
63rd annual conference of the South African Statistical Association hosted by Nelson Mandela University, November 2022, George.
Presenter/Authors: Liliane Tendela, Retha Luus and Renette Blignaut
Title: “Investigating the effectiveness of an undergraduate mathematics intervention at the University of the Western Cape (UWC).”
63rd annual conference of the South African Statistical Association hosted by Nelson Mandela University, November 2022, George.
Presenter/Authors: Thomas Farrar, Renette Blignaut, Retha Luus and Sarel Steel
Title: “Two new auxiliary models for extimating error variances in heteroskedastic linear regression.”
62nd annual conference of the South African Statistical Association hosted by Stellenbosch University, December 2021, Stellenbosch.
Presenter/Authors: Thomas Farrar, Retha Luus and Renette Blignaut
Title: “A new approach to error variance estimation in a heteroskedastic linear model.”
61th annual conference of the South African Statistical Association hosted by the Nelson Mandela University, November 2019, Port Elizabeth.
Presenter/Authors: Renette Blignaut, Retha Luus, Humphrey Brydon, Leonor Bosman and Rechelle Jacobs
Title: “Industry aligned degrees.”
61th annual conference of the South African Statistical Association hosted by the Nelson Mandela University, November 2019, Port Elizabeth.
Presenter/Authors: Thomas Farrar, Renette Blignaut, Retha Luus, and Sarel Steel
Title: “skedastic: An R Package for Heteroskedasticity Diagnostics.”
60th annual conference of the South African Statistical Association hosted by the University of South Africa, November 2018, Roodepoort.
Presenter/Authors: Bradley Paulse, Retha Luus and Renette Blignaut
Title: “Statistical Analysis of the Logistic regression using Complex Sampling.”
59th annual conference of the South African Statistical Association hosted by the Free State University, November 2017, Bloemfontein.
Presenter/Authors: Ariane Neethling, Retha Luus and Tertius de Wet
Title: “Prediction Error Estimation of the Survey-Weighted Least Squares Model under Complex Sampling.”
58th annual conference of the South African Statistical Association hosted by the University of Cape Town, November 2016, Cape Town.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “Simulating Complex Sampling Data for the evaluation of Survey-Weighted Linear Models.” ↪ view
58th annual conference of the South African Statistical Association hosted by the University of Cape Town, November 2016, Cape Town.
Presenter/Authors: Ariane Neethling, Retha Luus and Tertius de Wet
Title: “The Effectiveness of Weighting and Bootstrap in the Estimation of Model Parameters under Complex Sampling.”
57th annual conference of the South African Statistical Association hosted by the University of Pretoria, December 2015, Pretoria.
Presenter/Authors: Ariane Neethling, Retha Luus and Tertius de Wet
Title: “The Role of Weighting in the Analysis of Complex Survey Data.”
56th annual conference of the South African Statistical Association hosted by Rhodes University, October 2014, Grahamstown.
Presenter/Authors: Ariane Neethling, Retha Luus and Tertius de Wet
Title: “Regression Analysis for Complex Sampling Data.”
55th annual conference of the South African Statistical Association hosted by the University of Limpopo, November 2013, Polokwane.
Presenter/Authors: Ariane Neethling, Retha Luus and Tertius de Wet
Title: “Regression Analysis for Complex Sampling Data.”
53rd annual conference of the South African Statistical Association hosted by the Council for Scientific and Industrial Research and Statistics South Africa, November 2011, Pretoria.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “Confidence intervals for Laeken indicators under complex sampling.” ↪ view
52nd annual conference of the South African Statistical Association hosted by North West University, November 2010, Potchefstroom.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “Confidence intervals for welfare indices under a complex sampling design.” ↪ view
2018: 4
2025: 13
International Conference on Statistics and Data Science, June 2025, Vancouver, Canada.
Presenters/Authors: Thomas Farrar, Renette Blignaut, Retha Luus, Sarel Steel
Title: “A class of auxiliary models for variance estimation in heteroskedastic linear models.”
Data Science, Statistics and Visualisation (DSSV) conference, July 2025, Kruger National Park, South Africa.
Presenters/Authors: Fallo Khanye, Renette Blignaut, Julia Keddie, Retha Luus, Humphrey Brydon, Leona Craffert, Koen Ponnet, Lieven de Marez
Title: “Profiles to understand digital competencies using a survey-weighted clustering approach.”
Data Science, Statistics and Visualisation (DSSV) conference, July 2025, Kruger National Park, South Africa.
Presenters/Authors: Humphrey Brydon, Retha Luus, Sarel Steel, Renette Blignaut
Title: “Imbalanced data: an evaluation of sampling techniques and metrics.”
82nd FIP World Congress on Pharmacy and Pharmaceutical Sciences, September 2024, Cape Town, South Africa.
Presenters/Authors: Lara van Niekerk, Retha Luus, Michelle Viljoen & Salome Kruger
Title: “The effect of dolutegravir-based therapy on weight in female patients in the Cape Town metropole.”
Trinity Health and Education International Research Conference 2021 (THEconf2021), March 2021, Dublin, Ireland.
Presenters/Authors: Rosemary Monaghan, Maire O'Dwyer, Retha Luus, Niamh Mulryan, Philip McCallion, Mary McCarron & Martin Henman
Title: “Anti-epileptic drugs, seizures and effect of co-administration of potential seizure threshold lowering psychotropic drugs in adults with epilepsy & intellectual disability.”
Trinity Health and Education International Research Conference 2021 (THEconf2021), March 2021, Dublin, Ireland.
Presenters/Authors: Darren McCausland, Philip McCallion, Esther Murphy, Retha Luus & Mary McCarron
Title: “The impact of the COVID-19 crisis on the social inclusion and well-being of older people with an intellectual disability in Ireland.”
Trinity Health and Education International Research Conference 2021 (THEconf2021), March 2021, Dublin, Ireland.
Presenters/Authors: Mary McCarron, Darren McCausland, Andrew P. Allen, Retha Luus & Philip McCallion
Title: “The impact of the COVID-19 crisis for older people with an intellectual disability in Ireland.”
SAS Global Forum , March 2020, Washington DC, USA.
Presenter/Authors: Humphrey Brydon, Renette Blignaut, Retha Luus, Isabella Venter, and Desireé Cranfield
Title: “Modelling imbalanced classes.”
Women in Statistics and Data Science conference, October 2019, Bellevue, Seattle, USA.
Presenter/Authors: Rechelle Jacobs, Renette Blignaut, and Retha Luus
Title: “Statistics surviving in the world of data science.”
European conference on Quality in Official Statistics, June 2018, Krakow, Poland.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “Prediction Error Estimation of the Survey-Weighted Least Squares Model under Complex Sampling.” ↪ view
European conference on Data Analysis, July 2018, Paderborn, Germany.
Presenter/Authors: Humphrey Brydon, Retha Luus, Rechelle Jacobs, Rénette Blignaut, Innocent Karangwa and Joachim Jacobs
Title: “Dimension reduction could be used to build stable models to predict sexual activity amongst incoming first-year students.”
10th Southern Hemisphere Conference on the Teaching and Learning of Undergraduate Mathematics and Statistics, November 2015, Port Elizabeth, South Africa.
Presenter/Authors: Renette Blignaut, Abduraghiem Latief, Ronell Lombard-Jacobus, Retha Luus, Morné Lamont, and Rechelle Jacobs
Title: “Western Cape Maths4Stats training 2012 to 2014 – valuable or not?”
Cycle De Conférences, France – Afrique Du Sud, Les Grands Defis Demographiques Du 21e Siecle, December 2013, Paris, France.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “How to estimate poverty and inequality measures from survey samples.” ↪ view
Scholarship of Engagement (SoE) colloquim, University of the Western Cape, May 2023, Virtual event (Zoom).
Presenter/Authors: Renette Blignaut, Julia Keddie, Humphrey Brydon, Retha Luus, Rechelle Jacobs and Leonor Bosman
Title: “The impact of industry related UWC Data Science programmes.” ↪ view
Seminar series, Department of Statistics and Population Studies, University of the Western Cape, May 2017, Belhar, South Africa.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “Evaluating the Linear Modelling of Survey Data.” ↪ view
Seminar series, Department of Statistics and Actuarial Science, Stellenbosch University, May 2017, Stellenbosch, South Africa.
Presenter/Authors: Retha Luus, Ariane Neethling and Tertius de Wet
Title: “Weight Trimming in the Regression Analysis of Complex Survey Data.” ↪ view
Alumni day, Faculty of Economic and Management Sciences, Stellenbosch University, December 2016, Stellenbosch, South Africa.
Presenter/Authors: Retha Luus
Title: “Challenges in the analysis of Survey Data.” ↪ view
Sampling workshop presented to post-graduate students in the department of Statistics and Population Studies of the University of the Western Cape, 2012, Cape Town, South Africa.
Presenter/Authors: Retha Luus and Ariane Neethling
Title: “Sampling in Practice.” ↪ view
Sampling workshop presented to post-graduate students in the department of Economics of Stellenbosch University, 2012, Stellenbosch.
Presenter/Authors: Retha Luus and Ariane Neethling
Title: “Estimates and confidence intervals for welfare indices under complex sampling.” ↪ view