Montelukast v placebo at 12 weeks in children with persistent asthma

Mean decrease in score from baseline
Outcomes§MontelukastPlaceboLeast-square mean difference (CI)
§No symptoms = 0; severe symptoms = 4 or 5.
Overall daytime asthma symptom score0.370.260.12 (0.04 to 0.20)
Overnight asthma symptom score0.460.370.11 (0.01 to 0.21)