Application of appropriateness criteria for hospitalization in COPD exacerbation.

The IRYSS-COPD appropriateness study was developed in 16 hospitals belonging to the Spanish National Health Service from June 2008 to September 2010 (n = 2,877). The objectives were to apply a set of explicit criteria for the appropriateness of hospital admission created by the RAND/UCLA methodology to patients evaluated in the emergency department (ED) for exacerbations of COPD. This is a prospective cohort study.