Table 2 Assessment of inflammatory characteristics and fibroblast growth factor 9 (FGF9) concentration by diagnosis

Group	Maximum eosinophils/high-power field		Basal zone hyperplasia score*	Vascular papillae score*	FGF9 concentration (pg/ml/mg protein)*
Group	Number*	Range	Basal zone hyperplasia score*	Vascular papillae score*	FGF9 concentration (pg/ml/mg protein)*
Normal	0 (0)	0	1 (0)	1 (0)	414.1 (89.0)
Gastro-oesophageal reflux disease	1.6 (1.4)	0–9	1.3 (0.2)	1.4 (0.2)	540.8 (173.0)
Eosinophilic oesophagitis	147.0 (36.7)	18–271	3.4 (0.3)	2 (0)	1296.0 (344.0)