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Dysphagia

, Volume 15, Issue 3, pp 122–133 | Cite as

The SWAL-QOL Outcomes Tool for Oropharyngeal Dysphagiain Adults: II. Item Reduction and Preliminary Scaling

  • Colleen A.  McHorney
  • D. Earl  Bricker
  • JoAnne  Robbins
  • Amy E.  Kramer
  • John C.  Rosenbek
  • Kimberly A.  Chignell
Article

Abstract

The SWAL-QOL outcomes tool was constructed for use in clinical research for patients with oropharyngeal dysphagia. The SWAL-QOL was constructed a priori to enable preliminary psychometric analyses of items and scales before its final validation. This article describes data analysis from a pretest of the SWAL-QOL. We evaluated the different domains of the SWAL-QOL for respondent burden, data quality, item variability, item convergent validity, internal consistency reliability as measured by Cronbach's alpha, and range and skewness of scale scores upon aggregation and floor and ceiling effects. The item reduction techniques outlined reduced the SWAL-QOL from 185 to 93 items. The pretest of the SWAL-QOL afforded us the opportunity to select items for the ongoing validation study which optimally met our a priori psychometric criteria of high data quality, normal item distributions, and robust evidence of item convergent validity.

Key words: Quality of life — Patient satisfaction — Quality of care — Outcomes measurement — Psychometrics — Deglutition — Deglutition disorders. 

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Copyright information

© Springer-Verlag New York Inc. 2000

Authors and Affiliations

  • Colleen A.  McHorney
    • 1
  • D. Earl  Bricker
    • 2
  • JoAnne  Robbins
    • 3
  • Amy E.  Kramer
    • 4
  • John C.  Rosenbek
    • 5
  • Kimberly A.  Chignell
    • 5
  1. 1.University of Kentucky Medical Center and the HSR&D Program at the Lexington VA Medical Centers, Lexington, Kentucky, USAUS
  2. 2.College of Professional Studies, Marquette University, Milwaukee, Wisconsin, USAUS
  3. 3.University of Wisconsin–Madison Medical School, Madison, Wisconsin, USAUS
  4. 4.Department of Surgery, University of Wisconsin, Madison, Wisconsin, USAUS
  5. 5.William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin, USAUS

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