Women's College Research Institute

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Ava John-Baptiste, PhD

Adjunct scientist, Women’s College Research Institute
Assistant Professor, Departments of Epidemiology & Biostatistics, Anesthesia & Perioperative Medicine and Schulich Interfaculty Program in Public Health, University of Western Ontario

Ava John-Baptiste, PhD, conducts research on the safety, effectiveness and cost-effectiveness of health technologies. She is a health economist in the Centre for Medical Evidence, Decision Integrity and Clinical Impact (MEDICI). Through MEDICI, her research supports health policy decision-making at hospitals in London, Ontario. John-Baptiste also teaches health economics in the Schulich Interfaculty Program in Public Health.


  • John-Baptiste A, Sowerby LJ, Chin CJ, Martin J, Rotenberg BW. Comparing surgical trays with redundant instruments with trays with reduced instruments: a cost analysis. CMAJ Open. 2016 Aug 12;4(3):E404-E408. doi: 10.9778/cmajo.20150092.
  • John-Baptiste A, Schapira MM, Cravens C, Chambers JD, Neumann PJ, Siegel J, Lawrence W. The Role of Decision Models in Health Care Policy: A Case Study. Med Decis Making. 2016 Jul;36(5):666-79. doi: 10.1177/0272989X16646732. PMID: 27225487.
  • Chin CJ, Sowerby LJ, John-Baptiste A, Rotenberg BW. Reducing otolaryngology surgical inefficiency via assessment of tray redundancy. J Otolaryngol Head Neck Surg. 2014;43(1):46. Epub 2014 Dec 3.
  • John-Baptiste A, Wu W, Rochon P, Anderson GM, Bell CM. A systematic review and methodological evaluation of published cost-effectiveness analyses of aromatase inhibitors versus tamoxifen in early stage breast cancer. PLoS One. 2013 May 6;8(5):e62614.
  • John-Baptiste A, Yeung MW, Leung V, van der Velde G, Krahn M. Cost-effectiveness of hepatitis C-related interventions targeting substance users and other high-risk groups: a systematic review. Pharmacoeconomics. 2012 Nov 1;30(11):1015-34.
  • Lapointe-Shaw L, Fischer HD, Newman A, John-Baptiste A, Anderson GM, Rochon PA, Bell CM. Potential savings of harmonising hospital and community formularies for chronic disease medications initiated in hospital. PLoS One. 2012;7(6):e39737. Epub 2012 Jun 26.
  • John-Baptiste A, Bell C. A glimpse into the black box of cost-effectiveness analyses. CMAJ. 2011 Apr 5;183(6):E307-8. Epub 2011 Mar 14.
  • John-Baptiste A, Krahn M, Heathcote J, Laporte A, Tomlinson G. The natural history of hepatitis C infection acquired through injection drug use: meta-analysis and meta-regression. J Hepatol. 2010 Aug;53(2):245-51.Epub 2010 May 11.
  • John-Baptiste A, Tomlinson G, Hsu PC, Krajden M, Heathcote EJ, Laporte A, Yoshida EM, Anderson FH, Krahn MD. Sustained responders have better quality of life and productivity compared with treatment failures long after antiviral therapy for hepatitis C. Am J Gastroenterol. 2009 Oct;104(10):2439-48. doi: 10.1038/ajg.2009.346. PMID: 19568230.
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PhD, Health Services Research, University of Toronto, 2010

Areas of Interest


Economic evaluation


Decision modeling

Bayesian approaches to evidence synthesis

  • Fully affiliated with:
  • University of Toronto

  • A member of:
  • Council of Academic Hospitals of Ontario (CAHO)