Using the Standard Error of Measurement to Identify Important Changes on the Asthma Quality of Life Questionnaire

Kathleen W. Wyrwich; William M. Tierney; Fredric D. Wolinsky

doi:10.1023/A:1014485627744

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Using the Standard Error of Measurement to Identify Important Changes on the Asthma Quality of Life Questionnaire

Journal article

Peer reviewed

Using the Standard Error of Measurement to Identify Important Changes on the Asthma Quality of Life Questionnaire

Kathleen W. Wyrwich, William M. Tierney and Fredric D. Wolinsky

Quality of life research, Vol.11(1), pp.1-7

02/01/2002

DOI: 10.1023/A:1014485627744

PMID: 12003051

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Abstract

Objectives: To establish a link between the minimal important difference (MID) and the standard error of measurement (SEM) for all responsive dimensions of the Asthma Quality of Life Questionnaire (AQLQ). Methods: Secondary data analysis of baseline and follow-up interview data from 198 outpatients with asthma enrolled in a randomized controlled trial and receiving care at a major urban academic medical center's general medicine clinics. Domain statistics for baseline and follow-up interviews were examined for the AQLQ. The baseline SEM values were compared with established AQLQ MID standards using weighted κ values. Results: One SEM identified the MID in responsive AQLQ dimensions. Weighted κ values (0.88-0.93) validated excellent agreement between these two criteria. Conclusion: This is the third study to support using one SEM to identify important individual change in health-related quality of life (HRQoL) measures. However, refinement of the process for determining a measure's clinically meaningful differences is still needed to secure a link between the SEM and the identification of relevant HRQoL change over time.

Activity limitations

Asthma

Clinical trials

Laboratory schools

Quality of life

Questionnaires

Randomized controlled trials

Standard deviation

Standard error

Telephone interviews

Details

Title: Subtitle: Using the Standard Error of Measurement to Identify Important Changes on the Asthma Quality of Life Questionnaire
Creators: Kathleen W. Wyrwich - Saint Louis University
William M. Tierney - Indiana University
Fredric D. Wolinsky - Saint Louis University
Resource Type: Journal article
Publication Details: Quality of life research, Vol.11(1), pp.1-7
Publisher: Kluwer Academic Publishers
DOI: 10.1023/A:1014485627744
PMID: 12003051
ISSN: 0962-9343
eISSN: 1573-2649
Language: English
Date published: 02/01/2002
Academic Unit: Health Management and Policy
Record Identifier: 9984363600002771

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