Journal of Clinical Epidemiology
Volume 53, Issue 2 , Pages 167-174 , February 2000

Randomized trials versus observational studies in adolescent pregnancy prevention

  • Gordon H. Guyatt

      Affiliations

    • Department of Clinical Epidemiology & Biostatistics, Room 2C12, McMaster University Faculty of Health Sciences, 1200 Main Street West, Hamilton, Ontario, Canada L8N 3Z5,
    • Department of Medicine, McMaster University, Hamilton, Ontario, Canada L8N 3Z5,
    • Corresponding Author InformationCorresponding author. Tel.: (905) 525-9140, ext. 22900; Fax: (905) 577-0017.(Gordon H. Guyatt)
    • ,
  • Alba DiCenso

      Affiliations

    • Department of Clinical Epidemiology & Biostatistics, Room 2C12, McMaster University Faculty of Health Sciences, 1200 Main Street West, Hamilton, Ontario, Canada L8N 3Z5,
    • School of Nursing, McMaster University, Hamilton, Ontario, Canada L8N 3Z5,
    • ,
  • Vern Farewell

      Affiliations

    • Department of Statistical Science, University College, London, UK
    • ,
  • Andrew Willan

      Affiliations

    • Department of Clinical Epidemiology & Biostatistics, Room 2C12, McMaster University Faculty of Health Sciences, 1200 Main Street West, Hamilton, Ontario, Canada L8N 3Z5,
    • ,
  • Lauren Griffith

      Affiliations

    • Department of Clinical Epidemiology & Biostatistics, Room 2C12, McMaster University Faculty of Health Sciences, 1200 Main Street West, Hamilton, Ontario, Canada L8N 3Z5,

Received 1 May 1999 ,Revised 24 June 1999 ,Accepted 26 July 1999.

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PII: S0895-4356(99)00160-2

Journal of Clinical Epidemiology
Volume 53, Issue 2 , Pages 167-174 , February 2000

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