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American Thoracic Society workshop consensus for definition of severe/refractory asthma*
OCS, oral corticosteroid; ICS, inhaled corticosteroid; LABA, long-acting β-agonist; SABA, short-acting β-agonist; FEV1, forced expiratory volume in 1 second.
Reprinted from Moore et al. J Allergy Clin Immunol 2007;119:405-13, with permission of Elsevier2).
*Requires that other conditions have been excluded, exacerbating factors treated, and patient felt to be generally adherent.
