Health Research Methods, Evidence, and Impact

Bradley Johnston

PhD (Alberta), PDF (McMaster)

Assistant Professor (Part-time), Department of Health Research Methods, Evidence, and Impact

Assistant Professor, Health Policy, Management and Evaluation, University of Toronto

Clinical Epidemiologist, Anesthesia and Pain Medicine, The Hospital for Sick Children

Scientist, Child Health Evaluative Sciences, SickKids Research Institute

Tel: 416-813-7654 x328524
Fax:  416-813-7543
Peter Gilgan Centre for Research and Learning
686 Bay Street, Rm 11.9859 West
Toronto, ON, M5G 0A4

Academic Interests

Dr. Johnston’s academic interests include the methodology of meta-analyses, randomized trials and clinical practice guidelines. His work involves the application of these methods to a wide range of areas, with a particular interest in patient-reported pain and quality of life outcomes, and evidence-based nutrition.

Selected Publications

  1. Johnston BC, Kanters S, Bandayrel K, Wu P, Naji F, Seimenuik RA, Busse JW, Ball GD, Guyatt GH, Jansen JP, Thorlund K, Mills EJ.  Comparison of weight loss among named diet programs in overweight and obese adults: A network meta-analysis.  JAMA2014;312(9):923-933.
  2. Ebrahim S, Johnston BC, Akl EA, Mustafa RA, Sun X, Walter SD, Heels-Ansdell D, Alonso-Coello P, Guyatt GH. Addressing continuous data measured with different instruments for participants excluded from trial analysis: a guide for systematic reviewers. J Clin Epidemiol. 2014 May;67(5):560-70.
  3. Johnston BC, Patrick DL, Thorlund K, Busse JW, da Costa BR, Schünemann HJ, Guyatt GH. Patient-reported outcomes in meta-analyses -- Part 2: methods for improving interpretability for decision-makers. Health Qual Life Outcomes. 2013 Dec 21;11(1):211.
  4. Johnston BC, Patrick DL, Busse JW, Schünemann HJ, Agarwal A, Guyatt GH. Patient-reported outcomes in meta-analyses -- Part 1: assessing risk of bias and combining outcomes. Health Qual Life Outcomes. 2013 Jul 1;11(1):109.
  5. Johnston BC, Donen R, Pooni A, Pond J, Xie F, Giglia L, Kam A, Bhamber A, Bami K, Patel Y, Guyatt GH. Conceptual framework for health-related quality of life assessment in acute gastroenteritis. J Pediatr Gastroenterol Nutr. 2013 Mar;56(3):280-9.
  6. Johnston BC, Ma SS, Goldenberg JZ, Thorlund K, Vandvik PO, Loeb M, Guyatt GH.  Probiotics for the prevention of Clostridium difficile-associated diarrhea: a systematic review and meta-analysis. Ann Intern Med. 2012 Dec 18;157(12):878-88.
  7. Johnston BC, Thorlund K, da Costa BR, Furukawa TA, Guyatt GH. New methods can  extend the use of minimal important difference units in meta-analyses of continuous outcome measures. J Clin Epidemiol. 2012 Aug;65(8):817-26.

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