Contact information
Research groups
Elizabeth Conroy
PhD, MSc, BSc
OCTRU Lead Statistician
I work with medical professionals to design, achieve grant funding, conduct, analyse and report randomised clinical trials. I have a particular interest in trials that investigate surgical and other complex interventions. My specific areas of interest include trials involving clustering or learning effects at the centre- or treatment-provider-level and methods to mitigate these effects through design and analysis.
Before joining OCTRU and CSM as Lead Statistician in January 2022, I worked at the Liverpool Clinical Trials Unit (CTU) as a Senior Trial Statistician. There I provided statistical input throughout all stages of clinical trials, from initial idea to final publication. I also delivered trials methodology projects, such as establishing the role of trial steering committees as independent oversight committees.
While at the Liverpool CTU, I undertook a Doctoral Fellowship (PhD) at the University of Liverpool, funded by the National Institute of Health Research. My thesis was entitled: Learning and clustering: statistical adjustment for the learning curve and clustering effects in randomised surgical trials. I previously obtained an MSc in Statistics with Medical Application and a BSc in Mathematics at the University of Sheffield.
Externally, I serve as the independent statistician on data monitoring and trial steering committees and peer review for various medical and trials methodology journals.
Key publications
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Timing of Primary Surgery for Cleft Palate.
Journal article
Gamble C. et al, (2023), N engl j med, 389, 795 - 807
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Antibiotic or silver versus standard ventriculoperitoneal shunts (BASICS): a multicentre, single-blinded, randomised trial and economic evaluation.
Journal article
Mallucci CL. et al, (2019), Lancet, 394, 1530 - 1539
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Managing clustering effects and learning effects in the design and analysis of multicentre randomised trials: a survey to establish current practice.
Journal article
Conroy EJ. et al, (2020), Trials, 21
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Short-term safety outcomes of mastectomy and immediate implant-based breast reconstruction with and without mesh (iBRA): a multicentre, prospective cohort study.
Journal article
Potter S. et al, (2019), Lancet oncol, 20, 254 - 266
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Exploring the role and function of trial steering committees: results of an expert panel meeting.
Journal article
Harman NL. et al, (2015), Trials, 16
Recent publications
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Prolonged normothermic perfusion of the kidney prior to transplantation: a historically controlled, phase 1 cohort study.
Journal article
Dumbill R. et al, (2025), Nat commun, 16
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A review of the statistical analysis of randomised controlled trials conducted within OCTRU.
Journal article
Ooms A. et al, (2025), Trials, 26
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Prolonged normothermic perfusion of the kidney – a historically controlled, phase 1 cohort study
Journal article
Knight S. et al, (2025), Nature communications
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Timing of Primary Surgery for Cleft Palate.
Journal article
Gamble C. et al, (2023), N engl j med, 389, 795 - 807
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Factors affecting ventriculoperitoneal shunt revision: a post hoc analysis of the British Antibiotic and Silver Impregnated Catheter Shunt multicenter randomized controlled trial.
Journal article
Sunderland GJ. et al, (2023), J neurosurg, 138, 483 - 493