Food allergy presence
Presence of FA was assessed at follow-up and participants were assigned to one of three groups, previously reported by Westerlaken-van Ginkel et al. in adults.12 The groups represented those who did not report FA (noFA ), those likely to have a food allergy (likelyFA ) and those who could not be assigned to either of those groups, termed indeterminate (indeterminateFA ). In short, participants were classified as likelyFA if they stated:
at least one food AND at least one symptom consistent with immediate allergic reactions to food AND
other characteristics of FA consistent with immediate allergic reactions to food
Further details on the definitions are provided in the supplement.