Dr Thomas Sullivan is a research biostatistician who specialises in clinical trial methodology and statistical approaches to handling missing data. In his current role he contributes statistical expertise to several large-scale paediatric trials and leads a variety of research projects on statistical methodology for randomised trials. He has been the lead biostatistician and a steering committee member on 16 completed trials, with a further five trials currently in progress. Notable trials include the South Australian meningococcal B vaccine carriage study (B Part of It), Australia’s largest randomised trial, along with eight NHMRC funded trials on allergy prevention and the healthy development of children born preterm. His research interests include methods of multiple imputation, the analysis of clustered and longitudinal data, sample size calculations for perinatal trials, and methods to adjust for treatment switching in oncology trials. Dr Sullivan holds a PhD (Multiple Imputation for Handling Missing Outcome Data; completed in 2017), a Masters of Biostatistics, a Bachelor of Mathematical and Computer Sciences with First Class Honours in Statistics, and a Bachelor of Social Sciences, from the University of Adelaide.