Demographic and Clinical Characteristics of Severe Asthma Patients Worldwide

This study aims to inform the asthma scientific community of the demographic and clinical characteristics of severe asthma patients seen at severe asthma centres across the globe. This will help drive the next key research questions to be asked at the country, region, and international level.This is a cross-sectional study to describe the severe asthma population, utilising data from the International Severe Asthma Registry (ISAR) to descriptively illustrate differences and similarities of demographic and clinical attributes of severe asthma patients globally. The study will include adult severe asthma patients receiving treatment according to the Global Initiative of Asthma (GINA) Step 5 or uncontrolled on GINA Step 4. Descriptive statistics will be summarized for demographic factors and clinical characteristics, including medical history, healthcare resource utilisation, blood test measurements, fractional exhaled nitric oxide (FeNO) test, comorbidities and medication use categories.