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Wolfson Institute of Population Health

Tahania Ahmad

PhD Researcher (NIHR funded)



I started my PhD at Queen Mary, University of London in September 2021, funded by the National Institute of Health Research (NIHR ARC North Thames Academy). My project focuses on patterns of multimorbidity in people living with and beyond cancer (cancer survivors) with particular reference to deprivation and ethnicity, and patterns of healthcare resource use. I am also interested how the long-term conditions in this population impacts their Quality of Life. I will be using clustering methods and regression analysis to find patterns of multimorbidity.

Prior to the PhD, I worked as a medical statistician for six years at NHS and various universities. I hold a bachelor’s degree in Bio-informatics Engineering from University of New South Wales, Australia. Thereafter, I completed a master’s degree in Public Health specialising in Epidemiology at Imperial College, London. I also completed “Advanced Statistical Methods in Epidemiology” at the London School of Hygiene and Tropical Medicine.



Association of preoperative anaemia with postoperative morbidity and mortality: an observational cohort study in low-, middle-, and high-income countries.

Public availability and adherence to pre-specified statistical analysis approaches was low in published randomised trials

Prospective observational cohort study on grading the severity of postoperative complications in global surgery research.

Variation in haemodynamic monitoring for major surgery in European nations: Secondary analysis of the EuSOS dataset

Meta-analysis of the association between preoperative anaemia and mortality after surgery

Point Prevalence of Surgical Checklist Use in Europe

Dynamic preload markers to predict fluid responsiveness during and after major gastrointestinal surgery: An observational substudy of the OPTIMISE trial

Postoperative continuous positive airway pressure to prevent pneumonia, re-intubation, and death after major abdominal surgery (PRISM): a multicentre, open-label, randomised, phase 3 trial

Acute Kidney Injury and Risk of Death After Elective Surgery: Prospective Analysis of Data From an International Cohort Study

The same or different psychiatrists for in- and out-patient treatment? A multi-country natural experiment

Assessment of functional capacity before major non-cardiac surgery: an international, prospective cohort study

The surgical safety checklist and patient outcomes after surgery: a prospective observational cohort study, systematic review and meta-analysis

A Prospective International Multicentre Cohort Study of Intraoperative Heart Rate and Systolic Blood Pressure and Myocardial Injury After Noncardiac Surgery: Results of the VISION Study

Prevention of Respiratory Insufficiency after Surgical Management (PRISM) trial: report of the protocol for a pragmatic randomised controlled trial of Continuous Positive Airway Pressure (CPAP) to prevent respiratory complications and improve survival following major abdominal surgery

Preoperative heart rate and myocardial injury after non-cardiac surgery: Results of a predefined secondary analysis of the VISION study

Preoperative renal dysfunction and mortality after non-cardiac surgery

Use of failure-to-rescue to identify international variation in postoperative care in low-, middle- and high-income countries: a 7-day cohort study of elective surgery

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