Table 1—

Study procedure

Study period (weeks)Treatment
Study 1Study 2Visit spacing
Screening (1)OpenOpen1 week
Baseline placebo run-in (2)Single-blindPlaceboSingle-blindPlacebo2 weeks
Treatment (15)Double-blindPlaceboDouble-blindPlacebo3 weeks
MNTMNT
ICS
Extension (37)Double-blindMNTOpenMNT4–8 weeks
ICSICS
  • MNT: montelukast

  • ICS: inhaled beclomethasone