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Dr Sofia Dias

Dr Sofia Dias

Dr Sofia Dias

Senior Research Fellow

Area of research

Statistical methods for evidence synthesis

Office 2.10
Canynge Hall,
39 Whatley Road, Bristol BS8 2PS
(See a map)

+44 (0) 117 928 7245


My research focuses on statistical methodology for evidence synthesis particularly on network meta-analysis (mixed treatment comparisons), consistency checking, and bias modeling. I am Director and Senior Lead of the UK National Institute for Health and Clinical Excellence (NICE) Clinical Guidelines Technical Support Unit based in Bristol, which provides rapid response consultancy on complex synthesis methodology issues that arise in the development of clinical guidelines.

I have a special interest in meta-analysis of multiple, related outcomes and hold an MRC grant to develop models to better account for the relationships in outcomes.

You can read about the Impact of research carried out in the MPES group here.


Sofia studied Probability and Statistics at the University of Lisbon, Portugal, which included an ERASMUS year in the UK. She then went on to complete a PhD on Predictive Comparisons at the University of Sheffield, supervised by Professor Ian R. Dunsmore.

 From 2004 to 2007 Sofia worked at the University of Manchester with Andy Vail and Dr Roseanne McNamee, investigating the quality of randomised controlled trials in subfertility. She was editor and statistician for the Cochrane Menstrual Disorders and Subfertility Group until 2014.

In September 2007 Sofia joined the Multiple-Parameter Evidence Synthesis Programme. She worked on the project "Making Best Use of Randomised Trial Evidence" looking at bias, inconsistency and other issues in mixed treatment comparisons (newtork meta-analysis) and co-authored the NICE Decision Support Unit series of Technical Support Documents for Evidence Synthesis which have also been published in Medical Decision Making.

She is currently the Director of the NICE Clinical Guidelines Technical Support Unit, based in Bristol and lead author of the recent Wiley book on Network Meta-analysis for Decision Making.


Sofia teaches on the Indirect and Mixed Treatment Comparisons 3-day course, which is a collaboration between the Universities of Bristol and Leicester and on the Introduction to Network Meta-analysis short course.


  • meta-analysis
  • Bayesian inference
  • Decision making


  • mixed treatment comparisons
  • network meta-analysis
  • WinBUGS

Selected publications

Read more >

Recent publications

View complete publications list in the University of Bristol publications system

Networks & contacts

  • Nicky Welton
  • Tony Ades

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