{"10":"FEV-1 of 71-80% predicted, or FEV-1/FVC of 71-80%, or intermittent inhalational or oral bronchodilator therapy.","30":"FEV-1 of 56-70% predicted, or FEV-1/FVC of 56-70%, or daily inhalational or oral bronchodilator therapy, or inhalational anti-inflammatory medication.","60":"FEV-1 of 40-55% predicted, or FEV-1/FVC of 40-55%, or at least monthly visits to a physician for required care of exacerbations, or intermittent (at least 3x/year) courses of systemic corticosteroids.","100":"FEV-1 <40% predicted, or FEV-1/FVC <40%, or more than one attack per week with episodes of respiratory failure, or requires daily use of systemic high dose corticosteroids or immunosuppressive medications."}