Journal of Clinical Epidemiology
Volume 57, Issue 12 , Pages 1237-1243, December 2004

Blinding decreased recruitment in a prevention trial of postmenopausal hormone therapy

  • Elina Hemminki

      Affiliations

    • Health and Social Services, National Research and Development Center for Welfare and Health (STAKES), P.O. Box 220, 00531 Helsinki, Finland
    • Corresponding Author InformationCorresponding author. Tel. +358-9-3967-2307; fax: 358-9-3967-2227.
    • ,
  • Sirpa-Liisa Hovi

      Affiliations

    • Health and Social Services, National Research and Development Center for Welfare and Health (STAKES), P.O. Box 220, 00531 Helsinki, Finland
    • School of Public Health, University of Tampere, Tampere, Finland
    • ,
  • Piret Veerus

      Affiliations

    • School of Public Health, University of Tampere, Tampere, Finland
    • National Institute for Health Development (TAI), Department of Epidemiology and Biostatistics, Tallinn, Estonia
    • Estonian Center for Excellence in Behavioral and Health Sciences, Tallinn, Estonia
    • ,
  • Tiina Sevón

      Affiliations

    • Health and Social Services, National Research and Development Center for Welfare and Health (STAKES), P.O. Box 220, 00531 Helsinki, Finland
    • ,
  • Risto Tuimala

      Affiliations

    • Tampere University Hospital, Department of Obstetrics and Gynecology, Tampere, Finland
    • ,
  • Mati Rahu

      Affiliations

    • National Institute for Health Development (TAI), Department of Epidemiology and Biostatistics, Tallinn, Estonia
    • Estonian Center for Excellence in Behavioral and Health Sciences, Tallinn, Estonia
    • ,
  • Matti Hakama

      Affiliations

    • School of Public Health, University of Tampere, Tampere, Finland

Accepted 20 April 2004.

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PII: S0895-4356(04)00173-8

doi:10.1016/j.jclinepi.2004.04.009

Journal of Clinical Epidemiology
Volume 57, Issue 12 , Pages 1237-1243, December 2004

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