Dr Stephen Wright is a Postdoctoral Research Fellow in Biostatistics at the University of Technology Sydney (UTS), Australia. He is also an Honorary Research Fellow at the Australian Red Cross Blood Service. Stephen's primary research relates to how longitudinal observational data (or administrative data) might be used to answer causal-relationship type questions. As prediction modelling techniques improve, coupled with big-data, Stephen wants to know if are we getting any better at answering these questions? His statistical expertise include applying generalised linear mixed models, survival modelling, competing risk regression, and data linkage methods.