Contact information
Research groups
Colleges
Sofia Massa
PhD in Statistical Sciences (Padua)
OCTRU Lead Statistician
I am a Lead Statistician in the Oxford Clinical Trial Research Unit within the Centre for Statistics in Medicine.
Previously I was a Senior Statistician and Module Lead in Statistics in the Nuffield Department of Population Health within the Big Data Insitute. I co-lead the statistical and methodological aspects of research studies involving large population studies (UK Biobank, China Kadoorie Biobank, Cuba Prospective Study, Life Line Screening, TILDA among others).
Recent publications
Agreement and utility between registry and trial mortality data - a data utility comparison in the BOSS trial.
Journal article
Zimmermann A. et al, (2026), Trials
Barrett's Oesophagus Surveillance Versus Endoscopy at Need Study (BOSS): A Randomized Controlled Trial.
Journal article
Old O. et al, (2025), Gastroenterology, 169, 1233 - 1243.e8
Lessons learned from the BOSS trial.
Journal article
Old O. et al, (2025), Lancet Gastroenterol Hepatol, 10, 971 - 972
Cost-Effectiveness of Regular Surveillance Versus Endoscopy at Need for Patients With Barrett's Esophagus: Economic Evaluation Alongside the Barrett's Oesophagus Surveillance Study (BOSS) Randomized Controlled Trial.
Journal article
Deidda M. et al, (2025), Gastroenterology, 169, 1244 - 1252.e7
A review of the statistical analysis of randomised controlled trials conducted within OCTRU.
Journal article
Ooms A. et al, (2025), Trials, 26
622: BARRETT’S OESOPHAGUS SURVEILLANCE VERSUS ENDOSCOPY AT NEED STUDY (BOSS): A RANDOMIZED CONTROLLED TRIAL
Journal article
Old O. et al, (2025), Gastroenterology, 169, S - 149
Su1221: COST-EFFECTIVENESS OF REGULAR SURVEILLANCE VERSUS ENDOSCOPY AT NEED FOR PATIENTS WITH BARRETT’S ESOPHAGUS: ECONOMIC EVALUATION ALONGSIDE THE BOSS RANDOMIZED CONTROLLED TRIAL
Journal article
Old O. et al, (2025), Gastroenterology, 169
Clinical outcomes from EMERALD trial: A phase I evaluating ultra-hypofractionated MR-Guided Adaptive SABR (SMART) for localized pancreatic cancer
Conference paper
Mukherjee S. et al, (2025), RADIOTHERAPY AND ONCOLOGY, 206, S1783 - S1785
Barrett's Oesophagus Surveillance Versus Endoscopy at Need Study (BOSS): A Randomized Controlled Trial
Journal article
Old O. et al, (2025), GASTROENTEROLOGY, 169
COST-EFFECTIVENESS OF REGULAR SURVEILLANCE VERSUS ENDOSCOPY AT NEED FOR PATIENTS WITH BARRETT'S ESOPHAGUS: ECONOMIC EVALUATION ALONGSIDE THE BOSS RANDOMIZED CONTROLLED TRIAL
Conference paper
Old O. et al, (2025), GASTROENTEROLOGY, 169, S709 - S710
Five-year outcomes for patients sustaining severe fractures of the lower limb from the Wound Healing in Surgery for Trauma (WHIST) trial.
Journal article
Costa ML. et al, (2024), Bone Joint J, 106-B, 858 - 864