Skip to the content

A critique of Rasch analysis for the development of patient-centred outcomes: an illustrative example using the Dyspnoea-12

Yorke, J 'A critique of Rasch analysis for the development of patient-centred outcomes: an illustrative example using the Dyspnoea-12' , Journal Of Advanced Nursing . (Submitted)

[img] PDF - Submitted Version
Restricted to Repository staff only

Download (248kB) | Request a copy

    Abstract

    Background: The development of questionnaires has traditionally involved the application of classical test theory (CTT). More recently Rasch analysis has gained momentum as a robust application of ‘modern’ psychometric testing for the development of new instruments and the refinement of existing ones. Aim: This paper is a report of the application of Rasch analysis to the development and refinement of the Dyspnoea-12 questionnaire; an instrument that measures breathlessness severity using descriptor items. The aim is to provide a critique and working example of Rasch analysis techniques. Method: 358 patients with a cardiopulmonary disease responded to an initial list of 81 items. Hierarchical modeling reduced the list to 34 items. Subsequent Rasch analysis was used to informed decisions regarding further item removal and fit to the unidimensional model. This paper presents the application of Rasch analysis to these 34 items. Results: 22 items failed to reach the requirements of the Rasch model and were removed. Conclusion: This paper provides a working example of Rasch analysis. We have presented the steps involved in reducing and refining a large item-set by identifying those items which possessed the most reliable measurement properties. We have provided nurse researchers with an alternative to CTT when developing or refining questionnaires that measure patient-centred outcomes.

    Item Type: Article
    Themes: Subjects / Themes > R Medicine > RT Nursing
    Health and Wellbeing
    Schools: Colleges and Schools > College of Health & Social Care > School of Nursing, Midwifery, Social Work & Social Sciences > Centre for Nursing, Midwifery & Social Work Research
    Colleges and Schools > College of Health & Social Care
    Colleges and Schools > College of Health & Social Care > School of Nursing, Midwifery, Social Work & Social Sciences
    Journal or Publication Title: Journal Of Advanced Nursing
    Publisher: Blackwell Publishing
    Refereed: Yes
    ISSN: 0309-2402
    Depositing User: Institutional Repository
    Date Deposited: 23 May 2011 11:05
    Last Modified: 20 Aug 2013 17:48
    URI: http://usir.salford.ac.uk/id/eprint/14000

    Actions (login required)

    Edit record (repository staff only)

    Downloads per month over past year

    View more statistics