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.

References 

  1. French CT, Irwin RS, Fletcher KE. Evaluation of a cough-specific quality-of-life questionnaire. Chest. 2002;121:1123–1131
  2. French CT, Fletcher KE, Irwin RS. The responsivity of the Cough Quality of Life Questionnaire in patients being treated for chronic cough. Am J Respir Crit Care Med. 2004;169:508A
  3. Jaeschke R, Singer J, Guyatt GH. Measurement of health status. Control Clin Trials. 1989;10:407–415
  4. Juniper EF, Guyatt GH, Willan A, Griffith LE. Determining a minimal important change in a disease-specific quality of life questionnaire. J  Clin Epidemiol. 1994;47:81–87
  5. Norman GR, Stratford P, Regehr G. Methodological problems in the retrospective computation of responsiveness to change: the lesson of Cronbach. J Clin Epidemiol. 1997;50(8):869–879
  6. Guyatt GH, Norman GR, Juniper EF, Griffith LE. A critical look at transition ratings. J Clin Epidemiol. 2002;55:900–908
  7. Irwin RS, Curley FJ, French CL. Chronic cough: the spectrum and frequency of causes, key components of the diagnostic evaluation, and outcome of specific therapy. Am Rev Respir Dis. 1990;141:640–647
  8. Irwin RS, Boulet L-P, Cloutier MM, Fuller R, Gold PM, Hoffstein V, et al. Managing cough as a defense mechanism and as a symptom: a consensus panel report of the American College of Chest Physicians. Chest. 1998;114(Suppl):133S–181S
  9. Cronbach LJ, Gleser GC, Nanda H, Rajaratnam N. The dependability of behavioral measurements: theory of generalizability for scores and profiles. New York, NY: Wiley; 1972;
  10. Streiner DL, Norman GR. Health measurement scales: a practical guide to their development and use. 4th edition. Oxford, UK: Oxford University Press; 2008;
  11. Bland SM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. Lancet. 1986;1:307–310
  12. Ross M. Relation of implicit theories to the construction of personal histories. Psychol Rev. 1989;96:341–347

 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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