Article	Outcome definition	Time point	Nedocromil sodium / sodium cromoglycate	Levocabastine	Number of participants randomised (n) and comment
Azevedo 1991	Investigator’s global assessment	28 days	Excellent/good response: 67% (14/21)	Excellent/good response: 89% (16/18)	n = 63 Response at last available assessment. Percentage of symptom‐free days also reported
Davies 1993	Participants’ and investigator’s global evaluation of treatment efficacy (4‐point scale)	28 days	Participant evaluation: Excellent/good: 68%; Investigator evaluation: Excellent/good: 68%	Participant evaluation: Excellent/good: 87%; Investigator evaluation: Excellent/good: 91%	n = 95 Individual categories (participant evaluation) can be estimated from graph, and mean score could be calculated if considered appropriate