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Contact Information

Tim Ramsay, PhD


Administrative Coordinator:
Jodi Peters
613-737-8899 x79842

ORCID logo https://orcid.org/0000-0001-8478-8170

Tim Ramsay

Senior Scientist, Methodological & Implementation Research
Ottawa Hospital Research Institute
Scientific Director, Ottawa Methods Centre
Ottawa Hospital Research Institute
Associate Professor, School of Epidemiology and Public Health
University of Ottawa
Associate Director, Training and Education of Clinical Epidemiology Program
Ottawa Hospital Research Institute

Research Interests

  • Biostatistics
  • Epidemiology
  • Mathematics
  • Numerical analysis
  • Risk assessement

Brief Biography

Dr. Tim Ramsay has a PhD in biostatistics and is a Senior Scientist with the Clinical Epidemiology Program of the Ottawa Hospital Research Institute, as well as an Associate Professor with the University of Ottawa’s School of Epidemiology and Public Health. He is Scientific Director of the Ottawa Methods Centre, a group of statisticians, information technology specialists, epidemiologists, and health-care economists that supports clinical research at The Ottawa Hospital and across Ontario through the CIHR-funded Strategy for Patient Oriented Research. Dr. Ramsay has been an author on 229 peer-reviewed publications and has been a co-investigator on 69 peer-reviewed grants totaling over $66 million.

Selected Publications

  1. Dhanani S, Hornby L, van Beinum A, Scales NB, Hogue M, Baker A, Beed S, Boyd JG, Chandler JA, Chassé M, D'Aragon F, Dezfulian C, Doig CJ, Duska F, Friedrich JO, Gardiner D, Gofton T, Harvey D, Herry C, Isac G, Kramer AH, Kutsogiannis DJ, Maslove DM, Meade M, Mehta S, Munshi L, Norton L, Pagliarello G, Ramsay T, Rusinova K, Scales D, Schmidt M, Seely A, Shahin J, Slessarev M, So D, Talbot H, van Mook WNKA, Waldauf P, Weiss M, Wind JT, Shemie SD; Canadian Critical Care Trials Group; Canadian Donation and Transplantation Research Program. Resumption of Cardiac Activity after Withdrawal of Life-Sustaining Measures. N Engl J Med. 2021 Jan 28;384(4):345-352.
  2. Yogendrakumar V, Ramsay T, Fergusson DA, Demchuk AM, Aviv RI, Rodriguez-Luna D, Molina CA, Silva Y, Dzialowski I, Kobayashi A, Boulanger JM, Gubitz G, Srivastava P, Roy J, Kase CS, Bhatia R, Hill MD, Goldstein JN, Dowlatshahi D; PREDICT/Sunnybrook CTA Study Group. Redefining Hematoma Expansion With the Inclusion of Intraventricular Hemorrhage Growth. Stroke. 2020 Apr;51(4):1120-1127
  3. Carrier M, Abou-Nassar K, Mallick R, Tagalakis V, Shivakumar S, Schattner A, Kuruvilla P, Hill D, Spadafora S, Marquis K, Trinkaus M, Tomiak A, Lee AYY, Gross PL, Lazo-Langner A, El-Maraghi R, Goss G, Le Gal G, Stewart D, Ramsay T, Rodger M, Witham D, Wells PS; AVERT Investigators. Apixaban to Prevent Venous Thromboembolism in Patients with Cancer. N Engl J Med. 2019 Feb 21;380(8):711-719.
  4. Wen SW, White RR, Rybak N, Gaudet LM, Robson S, Hague W, Simms-Stewart D, Carroli G, Smith G, Fraser WD, Wells G, Davidge ST, Kingdom J, Coyle D, Fergusson D, Corsi DJ, Champagne J, Sabri E, Ramsay T, Mol BWJ, Oudijk MA, Walker MC; FACT Collaborating Group. Effect of high dose folic acid supplementation in pregnancy on pre-eclampsia (FACT): double blind, phase III, randomised controlled, international, multicentre trial. BMJ. 2018 Sep 12;362:k3478.
  5. Rodger MA, Gris JC, de Vries JI, Martinelli I, Rey É, Schleussner E, Middeldorp S, Kaaja R, Langlois NJ, Ramsay T, Mallick R, Bates SM, Abheiden CN, Perna A, Petroff D, de Jong P, van Hoorn ME, Bezemer PD, Mayhew AD; Low-Molecular-Weight Heparin for Placenta-Mediated Pregnancy Complications Study Group. Low-molecular-weight heparin and recurrent placenta-mediated pregnancy complications: a meta-analysis of individual patient data from randomised controlled trials. Lancet. 2016 Nov 26;388(10060):2629-2641.

Diseases, conditions and populations of interest

Research and clinical approaches

Artificial intelligence and data science; Behaviour; Biomaterials; Biostatistics; Cell therapy; Clinical decision rules; Clinical research; Clinical trials; Cohort studies; Critical care; Drug development; Emergency medicine; Epidemiology; Health professional behaviour change; Health promotion; Health research methods; Health services research; Health technology; Immunization; Immunization; Immunotherapy; Immunotherapy; Palliative care; Patient decision aids; Pharmacology; Pharmacy; Prevention; Psychology; Psychometrics; Public health; Qualitative methods; Quality Improvement; Regenerative medicine; Regenerative medicine; Rehabilitation; Risk assessment; Shared decision making; Surgery; Surveys; Systematic reviews; Transfusions; Translational research; Transplantation; Viral therapy; Viral therapy