COPD
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Multicenter Study Observational Study
Significance of Medication History at the Time of Entry into the COPDGene Study: Relationship with Exacerbation and CT Metrics.
Despite the importance of respiratory medication use in COPD, relatively little is known about which clinical phenotypes were associated with respiratory medications. ⋯ These results suggest that the use of respiratory medications, especially the number of medications, may identify a more severe phenotype of COPD that is highly susceptible to COPD exacerbations.