I'm currently looking for a postdoctoral researcher and 2-3 doctoral students. Please contact me if you might be interested!

I'm an Assistant Professor in the Department of Statistics and Actuarial Science at the University of Waterloo, in Waterloo, Ontario, Canada. I'm originally from the UK, and moved to Canada in 2013 to work as a postdoc at McGill University. I received my PhD from the London School of Hygiene and Tropical Medicine in 2012, an MSc (in statistics) from University College London in 2008, and an MA (in mathematics) from Trinity College, Cambridge, in 2007.

Research Interests

My primary research interest is in causal inference, with a specific focus on dynamic treatment regimes (DTRs) and personalized medicine. Dynamic treatment regimes are sequences of decision rules that take subject-level data (such as age, health status, or prior treatment) as input and recommend actions (such as which drug to take) as output. Working with longitudinal datasets, my work focuses on deriving methodologies that help identify the sequence of treatment decisions that yields the best expected outcome.

More generally, I'm interested in identifying new ways to apply methods from different disciplines in new settings. This includes modifying methodology from one area of statistics so that it may be applied in a different area (such as applying measurement error techniques to dynamic treatment regime problems), or through applying statistical methods to novel problems in the 'real world' of data analysis.

Other Interests

Outside of research I enjoy 'recreational statistics' (i.e., fun problems that I haven't worked out how to get funding for yet). I'm also on the editorial board of Significance, the magazine of the American Statistical Association and the Royal Statistical Society. If you're unfamiliar with it do please take a look! We write accessible stories about how statistics is used in virtually every area of life. We're also always looking for contributors (both online and for the print magazine), so if you have an idea - no matter how thoroughly thought out - please feel free to get in touch!

Beyond statistics I'm a big fan of trivia (especially pub trivia nights), and have appeared on a number of game shows on British television. When not hiding from the Canadian winter, meanwhile, I like getting outdoors to go hiking, canoeing, and kayaking.


Some of my more recent and/or interesting papers are listed below (with a short explanation of each). If a paper isn't available online, please email me for a copy!

A couple of methodological papers:

Some introductory/review articles:

My R package for DTR estimation, DTRreg:

...and now for something completely different: