“… salmeterol experienced significantly greater improvements from ….42 L vs 0.15 L , p < 0.001), morning peak expiratory flow (47 L/min vs 14 L/min, p < 0.001), evening peak … < 0.001), and asthma symptom scores (daytime scores reduced by 0.55 vs 0.30, p < 0.001).”