Mr Mark Chatfield


Centre for Health Services Research
Faculty of Medicine
+61 7 334 65042


A/Prof Mark D. Chatfield is a highly experienced statistician and clinical trialist now working at the UQ Clinical Trials Centre.

In collaboration with health and medical researchers, he has published over 190 times in academic journals. He has been an investigator on 27 NHMRC/MRFF funded (>$50M) studies (mostly clinical trials). He has co-supervised 4 PhD students to completion, and is currently an advisor to 5 PhD students. He has over 20 years of experience as a biostatistician in Australia (Brisbane | Darwin | Sydney) and the UK (Cambridge).

He plays an active role in the Australian Clinical Trials Alliance Statistics in Trials Interest Group.

Stata users around the world enjoy using his table1_mc command.

He is an Honorary Fellow (Associate Professor) with Menzies School of Health Research.

Research Interests

  • Interpretation of log-scale ouput
    He is researching the immediate, yet meaningful, interpretation of log-scale statistics, symmetric percentage differences such as 100(A – B)/0.5(A + B)% or 100(lnA – lnB)%, Bland-Altman plots, and the summarising, modelling and plotting of lognormal data.
  • Randomised Controlled Trials (RCTs)
    Mark has been involved with a plethora of trials of various designs in a broad range of fields. He makes considered, significant contributions to funding applications, trial design, analysis, presentation and interpretation. To date, he has published on 36 randomised trials (protocol and/or results paper). He is involved with methodological research into cluster randomised trials as well as sample size calculations and their connection with the anticipated width of 95% confidence intervals.
  • Meta analysis
    He has been involved with different types of meta-analysis. He has found a novel way to interpret the heterogeneity parameter, tau, in random-effects meta-analysis (or network meta-analysis) of various ratios (e.g. odds ratio, ratio of means etc). In general, he advocates for the reporting of tau (not tau^2) as it is far easier to understand.


  • Masters (Coursework), University of Oxford
  • Masters (Coursework), University of Southampton
  • Bachelor of Arts, University of Oxford


View all Publications


  • Doctor Philosophy

  • Doctor Philosophy

  • Doctor Philosophy

View all Supervision


Featured Publications

Book Chapter

  • Fleming, Jane, Matthews, Fiona E., Chatfield, Mark and Brayne, Carol (2006). Population levels of mild cognitive impairment in England and Wales. Mild Cognitive Impairment: International Perspectives. (pp. 77-91) edited by Holly A. Tuokko and David F. Hultsch. New York, NY, United States: Taylor and Francis. doi: 10.4324/9780203782996

Journal Article

Conference Publication

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

Completed Supervision