Figure 2).

Measurement of bronchial nitric oxide maximal flux (J’awNO), including mean (+), median, first and third interquartile range, and fifth and 95th percentile in asthmatic patients on four different treatment regimens. Visit 1 (baseline): fluticasone 250 μg/salmeterol 50 μg (F/S) twice a day; visit 2: post four weeks F/S and montelukast 10 mg daily (M); visit 3: post four weeks M and S; visit 4: post four weeks S only. *P<0.05 when comparing different treatment regimens