A preliminary quality of life questionnaire-bronchiectasis: a patient-reported outcome measure for bronchiectasis.

Abstract

BACKGROUND:

The Quality of Life Questionnaire-Bronchiectasis (QOL-B) is the first disease-specific, patient-reported outcome measure for patients with bronchiectasis. Content validity, cognitive testing, responsivity to open-label treatment, and psychometric analyses are presented.

METHODS:

Reviews of literature, existing measures, and physician input were used to generate the initial QOL-B. Modifications following preliminary cognitive testing (N = 35 patients with bronchiectasis) generated version (V) 1.0. An open-ended patient interview study (N = 28) provided additional information and was content analyzed to derive saturation matrices, which summarized all disease-related topics mentioned by each participant. This resulted in QOL-B V2.0. Psychometric analyses were carried out using results from an open-label phase 2 trial, in which 89 patients were enrolled and treated with aztreonam for inhalation solution. Responsivity to open-label treatment was observed. Additional analyses generated QOL-B V3.0, with 37 items on eight scales: respiratory symptoms; physical, role, emotional, and social functioning; vitality; health perceptions; and treatment burden. For each scale, scores are standardized on a 0-to-100-point scale; higher scores indicate better health-related quality of life. No total score is calculated. A final cognitive testing study (N = 40) resulted in a minor change to one social functioning scale item (QOL-B V3.1).

RESULTS:

Content validity, cognitive testing, responsivity to open-label treatment, and initial psychometric analyses supported QOL-B items and structure.

CONCLUSIONS:

This interim QOL-B is a promising tool for evaluating the efficacy of new therapies for patients with bronchiectasis and for measuring symptoms, functioning, and quality of life in these patients on a routine basis. A final psychometric validation study is needed and is forthcoming.

TRIAL REGISTRY:

ClinicalTrials.gov; No.: NCT00805025; URL: www.clinicaltrials.gov.

• Authors: Alexandra L Quittner, Kristen K Marciel, Matthias A Salathe, Anne E O'Donnell, Mark H Gotfried, Jonathan S Ilowite, Mark L Metersky, Patrick A Flume, Sandra A Lewis, Matthew McKevitt, A Bruce Montgomery, Thomas G O'Riordan, Alan F Barker
• Journal: Chest (Chest) Vol. 146 Issue 2 Pg. 437-448 (Aug 2014) ISSN: 1931-3543 [Electronic] United States
• PMID: 24626872 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)

Topics

• Bronchiectasis (diagnosis, psychology)
• Health Status
• Humans
• Psychometrics (methods)
• Quality of Life
• Self Report
• Surveys and Questionnaires