The main body of my research concerns Hierarchies of Evidence in Evidence-Based Medicine (EBM). I am interested in the variation in hierarchies presented in and around the EBM literature, and the ways in which these tools can be interpreted and used. My PhD thesis presents a systematic analysis of hierarchies, and argues that they should be rejected by the EBM movement.

As part of this project, I have assembled a database of hierarchies of evidence.

My other research interests include the philosophy of genomic and “personalised” medicine, broader themes in evidence, ethics and policy in medicine, issues concerning the demarcation between science and pseudoscience (especially in terms of “alternative” medicine), and the history of science and medicine, especially in the context of debates surrounding scientific realism. I have written papers concerning pluralist accounts of truth and demarcation, possible world semantics, and paternalism in medicine.