Study population
COPD
COPD, ADVERSE DRUG REACTIONS, EMERGENCY
Hospital ED admissions due to ADRs in patients with COPD were extracted from the national, multicenter, prospective observational study “ADRED” (“Adverse Drug Reactions in Emergency Departments”; DRKS-ID: DRKS00008979, registration date 01/11/2017, ethical approval 202/15; University of Bonn). This study serves to prospectively record and evaluate ADR cases using standardized ADR causality assessment [