Definition of terms
We defined AAR as symptoms induced by the unintended ingestion of an allergic food. Cases of intentional ingestion of food that was meant to be ingested or cases of symptoms due to ingestion in accordance with a pediatrician’s instruction at home after passing the OFC were excluded. Children with low-dose reactivity were defined as those who reacted to low-dose OFCs or experienced allergic symptoms upon ingesting a low dose or less of the allergic food within 2 years preceding the study initiation. Those who passed the low-dose OFC and reacted to a dose higher than the low dose within 2 years preceding the study initiation were defined as those with low-dose tolerance.