My research aims to improve public health and the methods for conducting public health research. I focus on three main areas: evaluating the effectiveness of health and social interventions; advancing methods for conducting and synthesizing intervention studies (clinical trials and systematic reviews); and improving research transparency through the use of methods that promote openness and transparency (e.g., study registration and data sharing). With Sean Grant, I co-direct the TRUST Initiative, which aims to increase transparency of interventions that inform health and social policy.