Journal article
The Work Productivity and Activity Impairment Questionnaire for Patients with Gastroesophageal Reflux Disease (WPAI-GERD)
Abstract
BackgroundA validated productivity questionnaire, the Work Productivity and Activity Impairment questionnaire for Gastroesophageal Reflux Disease (WPAIGERD), exists for Swedish patients with GERD.ObjectiveTo assess responsiveness to change of the WPAI-GERD and construct validity of the English language version.MethodsWe used the WPAI-GERD in a before-after treatment clinical study of Canadian GERD patients with moderate or severe symptoms …
Authors
Wahlqvist P; Guyatt GH; Armstrong D; Degl’Innocenti A; Heels-Ansdell D; El-Dika S; Wiklund I; Fallone CA; Tanser L; van Zanten SV
Journal
PharmacoEconomics, Vol. 25, No. 5, pp. 385–396
Publisher
Springer Nature
Publication Date
5 2007
DOI
10.2165/00019053-200725050-00003
ISSN
1170-7690