The Asthma-COPD Overlap Syndrome: A Common Clinical Problem in the Elderly

Figure 2

The prevalence of obstructive airway diseases in a small cohort of patients from our the UC Davis Asthma Network (UCAN) severe asthma clinic at the UC Davis Medical Center. The category of “Other” represents a combination of bronchitis, bronchiectasis, and/or bronchiolitis. The numbers within each bar above represent the percentage for that group (^∗𝑃=0.0009, ^∗∗𝑃<0.0001, and ^∗∗∗𝑃<0.0001 by Fisher’s exact test). For definitions of the different diagnostic groups, please see the text.