Development and first validation of the COPD Assessment Test

There is need for a validated short, simple instrument to quantify chronic obstructive pulmonary disease (COPD) impact in routine practice to aid health status assessment and communication between patient and physician. Current health-related quality of life questionnaires provide valid assessment of COPD, but are complex, which limits routine use. The aim of the present study was to develop a short validated patient-completed questionnaire, the COPD Assessment Test (CAT), assessing the impact of COPD on health status. 21 candidate items identified through qualitative research with COPD patients were used in three prospective international studies (Europe and the USA, n = 1,503). Psychometric and Rasch…

• G
  GlaxoSmithKline
• CF
  COPD Foundation
• UO
  University of Aberdeen
• UM
  Universitair Medisch Centrum Groningen
• UD
  Universitat de Barcelona