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FEV1, FVC, FEV1/FVC, and FEF25–75 percent predicted values in children (panels A–D, respectively) and adolescents (panels E–H, respectively) at baseline and after 360 mcg, 540 mcg, and 720 mcg of albuterol sulfate. Data are stratified by the dosage of albuterol at which maximal bronchodilation was obtained (red = 360 mcg, blue = 540 mcg, orange = 720 mcg). *p < 0.05
