Research groups
Colleges
Stephen Gerry
BSc, MSc
Senior Medical Statistician and NIHR Doctoral Research Fellow
Based in the Centre for Statistics in Medicine (CSM), I investigate the use of statistical methods to develop and test early warning scores. These scores combine a patient's routinely measured vital signs, such as their blood pressure and heart rate, in an algorithm to identify patients at risk of deteriorating. Hospital staff almost universally across the NHS use these scores every day. As vital signs are increasingly recorded electronically instead of on paper charts, we have a great opportunity to improve the algorithms. In collaboration with other statisticians and doctors, I hope to develop better and more sophisticated algorithms, so that more patients will be prevented from unnecessary harm and hospital staff's time will be used more efficiently. This doctoral research project is funded by the NIHR Doctoral Research Fellowship Programme.
My broad research interests are statistical analysis and statistical methodology in prediction modelling and randomised clinical trials. I have several years’ experience working as a trial statistician, providing support to several clinical trials. These include studies such as ART (the Arterial Revascularisation Trial), with 5-year interim results recently published in the New England Journal of Medicine; RAMPP (Randomised Ambulatory Management of Primary Pneumothorax); and RESPECT-Meso (Regular Early SPEcialist symptom Control Treatment on quality of life in malignant Mesothelioma).
I teach on CSM’s annual Randomised Controlled Trials course. I sit on the London Central Research Ethics Committee, and as an independent member on several Data Monitoring and Trial Steering Committees.
I joined CSM in 2012, after working at the Wales Cancer Trials Unit in Cardiff. Prior to this, I studied mathematics and medical statistics in Southampton.
Recent publications
Reference charts for first-trimester placental three-dimensional fractional moving blood volume derived using OxNNet.
Journal article
Mathewlynn S. et al, (2026), Ultrasound Obstet Gynecol, 67, 191 - 200
Propensity-matched analysis of the impact of saphenous vein graft external stenting on clinical outcomes in coronary bypass surgery: The RESTART study.
Journal article
Weltert LP. et al, (2025), JTCVS Open, 28, 214 - 226
ificial intelligence imaging decision support for acute stroke treatment in England: a prospective observational study.
Journal article
Nagaratnam K. et al, (2025), Lancet Digit Health, 7
Multivariable Prediction Models for Atrial Fibrillation after Cardiac Surgery: A Systematic Review and Critical Appraisal.
Journal article
Fields KG. et al, (2025), Anesthesiology, 143, 1643 - 1655
Reporting of Hospital-Free Days As an Outcome Measure in Critical Care Trials: A Systematic Review.
Journal article
Shackleton R. et al, (2025), Crit Care Med, 53, e2686 - e2697