Witold Więcek
I am a researcher with a PhD in statistics, working on applied problems in global health, epidemiology, and development economics. I am a Consulting Director at the Development Innovation Lab at the University of Chicago, a Non-resident Research Fellow at the Centre for Global Development, and a Senior Fellow at the Institute for Progress.
Links: TWITTER GITHUB GOOGLE SCHOLAR
Recent Projects
- BEAR
an open-source meta-dataset of empirical research results for meta-science.
- Water meta-analysis
on water quality interventions and child mortality.
- Optimising dosing of vaccines
policy work on how to deliver vaccines to more people when supply is constrained.
- R package baggr
for fitting Bayesian meta-analytic models with Stan.
Recent Papers
Google Scholar- Bayesian clinical trials and the FDA
JAMA, 2026, with Andrew Gelman and Erik van Zwet.
- Water treatment and child mortality
NBER working paper, Feb 2026, with Michael Kremer et al.
- Meta-analysis with a single study
Statistical Methods in Medical Research, 2025, with Andrew Gelman and Erik van Zwet.