Talks

2021

Mendelian randomization: Old and new insights

Mendelian randomization (MR) is a method for causal inference that utilizes the natural experiment in genetic inheritance. The idea of …

Mendelian randomization: Old and new insights

Mendelian randomization (MR) is a method for causal inference that utilizes the natural experiment in genetic inheritance. The idea of …

Discussion on 'Causal Inference in Genetic Trio Studies'

Discussion on Dr Stephen Bates’ talk in the Online Causal Inference Seminar.

2020

Selection bias in 2020

This talk will examine the selection bias that occurred in studying some most contentious problems in 2020. In the first case study, we …

Discovering mechanistic heterogeneity using Mendelian randomization

Mendelian Randomization (MR) is a popular method in epidemiology and genetics that uses genetic variation as instrumental variables for …

Sensitivity analysis for observational studies

Sensitivity analysis is widely recognized as a critical step in an observational study but is seldom found in applications. One reason …

Using sparsity to overcome unmeasured confounding

Sparsity is often used to improve the interpretability of a statistical analysis and/or reduce the variance of a statistical estimator. …

Bootstrapping sensitivity analysis

Causal inference: An introduction

Introduction to causal inference for social science PhD students.

The cycle of statistical research

More than fifty years ago, John Tukey first envisioned a field we now call “Data Science” (he called it “Data …

2019

Using sparsity to overcome unmeasured confounding: Two examples

Sparsity is often used to improve the interpretability of a statistical analysis and/or reduce the variance of a statistical estimator. …

MR Data Challenge 2019

This report entered the 2019 MR Data Challenge and contains reproducible R code for our analysis.

The statistics of summary-data Mendelian randomization

Invited talk giving an overview of my research on summary-data Mendelian randomization.

Mendelian randomization: A tutorial

Tutorial talk for the theory, methods, and practice of Mendelian randomization.