Clinical Epidemiology & Biostatistics


Andrew Worster

MD (Dalhousie), MSc (McMaster), CCFP(EM), FCFP

Associate Professor, Department of Medicine, Division of Emergency Medicine

Associate Member, Dept of Clinical Epidemiology & Biostatistics

Research Director, Emergency Medicine, Hamilton Health Sciences

Deputy Director, Division of Emergency Medicine

Chair, Best Evidence in Emergency Medicine (BEEM)

Associate Editor, ACP Journal Club

Associate Editor, Canadian Journal of Emergency Medicine

905.521.2100 x75848
905.577.8457
worster@mcmaster.ca

ERm 250a McMaster Clinic
Hamilton General Hospital
237 Barton St. East 
Hamilton, Ontario, Canada 
L8L 2X2 

Academic Interests

Dr. Worster's research interests include: health research methods and their application to emergency medicine, utilization and evaluation of diagnostic tests in emergency medicine, and knowledge translation in emergency medicine (Best Evidence in Emergency Medicine (BEEM)).

Selected Publications

  1. Worster A, Chan T. Evidence-based emergency medicine. Does this patient have a hemorrhagic stroke? Ann Emerg Med. 2011 May;57(5):535-6.
    PubMed PMID: 20952101.
  2. Worster A. Are hemostatic agents effective in the treatment of acute spontaneous intracerebral hemorrhage? Ann Emerg Med. 2011 Jan;57(1):66-7. PubMed PMID: 20646786.
  3. Worster A, Keim SM, Carpenter CR, Adeoye O; Best Evidence in Emergency Medicine (BEEM) Group. Does early intensive lowering of blood pressure reduce hematoma volume and improve clinical outcome after acute cerebral hemorrhage? J Emerg Med. 2009 Nov;37(4):433-8. PubMed PMID: 19545967.
  4. Worster A. ACP Journal Club. Review: 3 prediction rules, particularly ABCD, identify ED patients who can be discharged with low risk for stroke after TIA. Ann Intern Med. 2009 Sep 15;151(6):
    PMID: 19755361.
  5. Worster A, Norman G. Factor analyze this. CJEM. 2009 May;11(3):240-1.
    PubMed PMID: 19523273.
  6. Worster A, Carpenter C. A brief note about likelihood ratios. CJEM. 2008 Sep;10(5):441-2. PubMed PMID: 18826732.
  7. Worster A, Carpenter C. Incorporation bias in studies of diagnostic tests: how to avoid being biased about bias. CJEM. 2008 Mar;10(2):174-5. PubMed PMID: 18371254.
  8. Worster A, Balion CM, Hill SA, Santaguida P, Ismaila A, McKelvie R, Reichert SM, McQueen MJ, Booker L, Raina PS. Diagnostic accuracy of BNP and NT-proBNP in patients presenting to acute care settings with dyspnea: a systematic review. Clin Biochem. 2008 Mar;41(4-5):250-9. PubMed PMID: 17915204.
  9. Worster A, Fernandes CM, Eva K, Upadhye S. Predictive validity comparison of two five-level triage acuity scales. Eur J Emerg Med. 2007 Aug;14(4):188-92. PubMed PMID: 17620907.
  10. Worster A, Smith C, Silver S, Brown MD. Evidence-based emergency medicine/critically appraised topic. Thrombolytic therapy for submassive pulmonary embolism? Ann Emerg Med. 2007 Jul;50(1):78-84.
    PubMed PMID: 17449142.

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