Overview Reducing Diagnostic Error to Improve Patient Safety in COPD and Asthma (REDEFINE Study) Status: Completed Trial end date: 2019-09-30 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate the use of spirometry in identifying Diagnostic Error in COPD and Asthma patients. Phase: Phase 3 Details Lead Sponsor: University of Illinois at ChicagoCollaborator: Agency for Healthcare Research and Quality (AHRQ)Treatments: Albuterol