Table 1.

Level of proof of the pediatric EoE studies.

Level of proof	Explanation
A	Prospective interventional and/or observational studies.
B	Retrospective interventional and/or observational studies in which the patients were strictly monitored and had extensive counseling with interim follow-up by a dietician or study nurse.
C	Retrospective interventional and/or observational studies in which the patients received instructions regarding the dietary therapy at the beginning of the study, but data on interim follow-up were lacking.
D	Abstracts, notes of conference proceedings, incomplete reports and letters to the editor.