Table 1.
The Severe Asthma Research Program Definition of Severe Asthma, Adapted from the American Thoracic Society Workshop on Refractory Asthma16
| Major criteria for severe asthma (must have at least 1 to achieve asthma control): |
| Treatment with high-dose inhaled corticosteroids |
| Treatment with continuous oral corticosteroids (at least 50% of the year) |
| Minor criteria for severe asthma (must have at least 2): |
| Treatment with additional controller medications to maintain asthma control |
| Daily use of short-acting bronchodilators (5 of 7 days) |
| Persistent airflow obstruction, with baseline FEV1 <80% predicted |
| One or more urgent care visits for asthma in the previous year |
| Three or more oral corticosteroid bursts in the previous year |
| A history of prompt deterioration in asthma symptoms with a reduction in the dose of inhaled corticosteroids or oral corticosteroids |
| A near-fatal asthma event requiring intubation in the past |