Journal of Clinical Epidemiology
Volume 63, Issue 10 , Pages 1123-1131 , October 2010

A prospective global measure, the Punum Ladder, provides more valid assessments of quality of life than a retrospective transition measure

  • Kenneth E. Fletcher

      Affiliations

    • Department of Psychiatry, University of Massachusetts Medical School, Worcester, MA, USA
    • ,
  • Cynthia T. French

      Affiliations

    • Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
    • Corresponding Author InformationCorresponding author. Department of Medicine, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA, USA. Tel.: +508-856-1919; fax: +508-856-4479.
    • ,
  • Richard S. Irwin

      Affiliations

    • Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
    • ,
  • Kristin M. Corapi

      Affiliations

    • Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
    • ,
  • Geoffrey R. Norman

      Affiliations

    • Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada

,Accepted 6 September 2009.

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 Conflict of interest: K. Fletcher, C. French, and R. Irwin disclose that they hold the copyright for the Cough Quality of Life Questionnaire and have collectively received $5,000 over 6 years from industry-sponsored research only. K. Corapi and G. Norman have no potential conflicts to disclose.

PII: S0895-4356(09)00385-0

doi: 10.1016/j.jclinepi.2009.09.015

Journal of Clinical Epidemiology
Volume 63, Issue 10 , Pages 1123-1131 , October 2010

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