Value of the Bronchodilator Response in Assessing Controller Naïve Asthmatic Children

ROC analysis to identify patients with asthma from FEV₁ BDR. AUC, Area under the curve; PVP, positive predictive value; NPV, negative predictive value. The triangle denotes change.

A, Percent of patients in each category defined by baseline FEV₁ <80% and BDR ≥9% described by asthma diagnosis status and symptom severity. FEV₁ ≥80% BDR <9%, FEV₁ ≥80% BDR ≥9%, FEV₁ <80% BDR <9%, FEV₁ <80% BDR ≥9%. B, Percent of patients in each category defined by baseline FEV₁ <80% and BDR ≥12% described by asthma diagnosis status and symptom severity. FEV₁ ≥80% BDR <12%, FEV₁ ≥80% BDR ≥12%, FEV₁ <80% BDR <12%, FEV₁ <80% BDR ≥12%.