Development of a questionnaire to measure health-related quality of life (HRQoL) in patients with atrial fibrillation (A
- PDF / 516,339 Bytes
- 8 Pages / 610 x 792 pts Page_size
- 41 Downloads / 185 Views
Open Access
Research
Development of a questionnaire to measure health-related quality of life (HRQoL) in patients with atrial fibrillation (AF-QoL) Xavier Badia*1, Fernando Arribas2, Jose Miguel Ormaetxe3, Rafael Peinado4 and Miguel Sainz de los Terreros5 Address: 1IMS Health, Dr. Ferran, 25, 2°, Barcelona 08034, Spain, 2Hospital 12 de Octubre, Madrid, Spain, 3Hospital de Basurto, Bilbao, Spain, 4Hospital La Paz, Madrid, Spain and 53M Farmacéutica, Madrid, Spain Email: Xavier Badia* - [email protected]; Fernando Arribas - [email protected]; Jose Miguel Ormaetxe - [email protected]; Rafael Peinado - [email protected]; Miguel Sainz de los Terreros - [email protected] * Corresponding author
Published: 4 July 2007 Health and Quality of Life Outcomes 2007, 5:37
doi:10.1186/1477-7525-5-37
Received: 16 February 2007 Accepted: 4 July 2007
This article is available from: http://www.hqlo.com/content/5/1/37 © 2007 Badia et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract Background: The Health-Related Quality of Life (HRQoL) assessment in atrial fibrillation (AF) patients has traditionally been carried out in a poorly standardised fashion, or via the use of non disease-specific HRQoL questionnaires. The development of a HRQoL questionnaire with a good measuring performance will allow for a standardised assessment of the impact of this disease on the patient's daily living. Methods: A bibliography review was conducted to identify the most relevant domains of daily living in AF patients. Subsequently, a focus group was created with the aid of cardiologists, and 17 patients were interviewed to identify the most-affected HRQoL domains. A qualitative analysis of the interview answers was performed, which was used to develop a pilot questionnaire administered to a 112-patient sample. Based on patient responses, an analysis was carried out following the statistical procedures defined by the Classical Test Theory (CTT) and the Item Response Theory (IRT). Reliablility was assessed via Cronbach's coefficient alpha and item-total score correlations. A factorial analysis was performed to determine the number of domains. For each domain, a Rasch analysis was carried out, in order to reduce and stand hierarchically the questionnaire items. Results: By way of the bibliography review and the expert focus group, 10 domains were identified. The patient interviews allowed for the identification of 286 items that later were downsized to 40 items. The resultant preliminary questionnaire was administered to a 112-patient sample (pilot study). The Rasch analysis led to the definition of two domains, comprising 7 and 11 items respectively, which corresponded to the psychological and physical domains (18 items total), thereby giving rise to
Data Loading...
