News
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New assumption-free statistics offer a better choice for many research studies19 June 2025PhD candidate Daniël Gomon has developed statistical methods that could significantly improve research in fields like medicine and demography. ‘Mathem...
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Smarter hypothesis testing with statistics: how e-values can improve scientific research13 June 2025During his PhD research, mathematician Tyron Lardy worked on a new approach to hypothesis testing. Instead of the traditional p-value, he uses so-call...
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Outbreak of an infectious disease? Mathematics helps in making quick, informed decisions15 October 2024A job thanks to COVID—something not many people can claim. But PhD candidate Vera Arntzen can. Over the past four years, she has mapped two crucial ch...
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New e-value even more flexible: significance level adjustable at a later stage23 September 2024Recently, a paper by Peter Grünwald was published in the prestigious scientific journal Proceedings of the National Academy of Sciences. Grünwald is f...
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KiKa grant for mathematician: how statistics helps fight bone cancer12 July 2024Using mathematics to help children with bone cancer. It sounds a little strange, but for statistician Marta Fiocco, it's just her job. She gets a subs...
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Peter Grünwald develops a revolutionary statistical theory with an ERC Advanced Grant11 April 2024Using mathematics to determine whether scientific results are significant or not. Peter Grünwald, full professor of Statistical Learning at the Mathem...
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Dutch Cancer Society allocates funds to a mathematician: for treating Ewing sarcoma with the help of an app26 January 2024If doctors could better estimate a patient's chances of survival, this would help in choosing a specific treatment. It would be particularly beneficia...
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Italian nurse acquitted of murder after statistical analysis25 April 2022Italian nurse Daniela Poggiali was arrested and convicted of murdering two hospital patients in 2014. Her case attracted the attention of Leiden stati...
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Statistics for the benefit of the patient17 June 2021Marta Fiocco has been appointed as of 1 April as professor of applied mathematics, in particular medical statistics. Fiocco's appointment is at the Fa...
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Anja Rüten-Budde wins the C.J. Kok Jury Award for best thesis16 February 2021Statistician Anja Rüten-Budde has won the C.J. Kok Jury Award 2020. Her PhD thesis resulted in an app which helps patients with soft tissue sarcoma an...
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Open letter is successful: The Lancet withdraws controversial Covid-19 publication05 June 2020The leading medical journal The Lancet has withdrawn a controversial publication on the antimalarial drug hydroxychloroquine. The reason for this is t...
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Hardly an audience and a remote committee: receiving a PhD in times of corona19 March 2020Almost all PhD defences at Leiden University have been postponed due to the corona virus, but statistician Sanne Willems is going through with hers. I...
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Dynamic personalised sarcoma care: implementation of a mathematical prediction app in the clinic22 January 2020A new app provides dynamic predictions of survival for patients suffering from soft tissue sarcoma. It was developed by the mathematical Institute res...
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Measuring sulfur with satellites15 January 2020Seagoing vessels may emit fewer and fewer harmful substances, but how do you measure whether they comply with the standards? The Dutch Environment and...
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Jacqueline Meulman receives the 2020 Psychometric Society Career Award for Lifetime Achievement10 January 2020Recognition for an unprecedented career of more than forty years: Professor of Applied Statistics Jacqueline Meulman of the Mathematical Institute rec...