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.
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.
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.
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.
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.
Harman NL. et al, (2015), Trials, 16
Recent publications
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Timing of Primary Surgery for Cleft Palate.
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.
Sunderland GJ. et al, (2023), J neurosurg, 138, 483 - 493
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Managing clustering effects and learning effects in the design and analysis of randomised surgical trials: A review of existing guidance
Conroy EJ. et al, (2022)
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Implant-Based Reconstruction following Mastectomy in Patients Who Have Had a Previous Breast Augmentation: Lessons from the National Multicenter Implant Breast Reconstruction Evaluation Study.
Baker BG. et al, (2022), Plastic and reconstructive surgery, 149, 324 - 337
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Inter-rater reliability in classification of canonical babbling status based on canonical babbling ratio in infants with isolated cleft palate randomised to Timing of Primary Surgery for Cleft Palate (TOPS)
Willadsen E. et al, (2022), Clinical linguistics & phonetics, 1 - 22