Professor James Stanley is a biostatistician and health researcher at the University of Otago Wellington in New Zealand. He has worked extensively in analysis of complex surveys, including a recently completed community survey on the prevalence of Helicobacter pylori that used sampling methods with primary and secondary ascertainment of current infection status. Across a variety of projects James is interested in applying rigorous statistical design/analysis principles to maximise study validity in complex real-world research settings.