Article	Outcome definition	Time point	Emedastine	levocabastine	Number of participants randomised (n) and comment
Secchi 2000a	Mean physician’s impression score (0‐4 scale)	14 days	1.1	1.9	n = 42 Estimated from graph, no standard deviation
Secchi 2000b	Mean physician’s impression score (0‐4 scale)	14 days	Not reported	Not reported	n = 202 “statistically significant” differences