Matt Tudball

Matt Tudball

Wellcome Trust PhD student

MRC Integrative Epidemiology Unit, University of Bristol

About me

Welcome to my website! My name is Matt Tudball and I am a Wellcome Trust 4-year PhD student at the MRC Integrative Epidemiology Unit, University of Bristol, and a visiting PhD student at the Statistical Laboratory, University of Cambridge. I am supervised by George Davey Smith, Kate Tilling, Qingyuan Zhao, Rachael Hughes and Jack Bowden.

My research involves the development of novel causal inference methods with application to epidemiology. In addition to my current papers and pre-prints, I am working on an exact inference method for within-family Mendelian randomisation (watch this space!).


  • Selection bias
  • Causal inference
  • Mendelian randomisation


  • MA in Economics, 2017

    University of Toronto

  • BSc in Economics and Mathematics, 2016

    University of Toronto

Publications and pre-prints

An interval estimation approach to sample selection bias

Mendelian randomisation with coarsened exposures

Collider bias undermines our understanding of COVID-19 disease risk and severity

Long time out: unemployment and joblessness in Canada and the United States