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Table of Contents
Food allergy definition
Researchers from the University Medical Center Groningen developed a definition of food allergy for all Lifelines participants (adults and children) using the allergy variables from 2A. (sections: Diseases & symptoms (Allergies) and secondary & linked variables).
The Food allergy definition can be requested in the Lifelines catalogue or by mail (data@lifelines.nl).
Background
In 2020, Westerlaken-van Ginkel et al. published a paper in which an algorithm to define food allergy in adults in Lifelines is developed and described. Since the allergy variables for adults differ slightly from those of children (completed by the parents) and adolescents, this algorithm has to be adapted to defined food allergy in children/adolescents as well.
Calculation of food allergy definition
1.
Variables
| Label English | Label Dutch | Code | Variable | Assessment | Age |
| age at definition of food allergy (based on questionnaire) | leeftijd ten tijde van definitie voedselallergie (op basis van moment vragenlijst) | foodallergy_age_all_c_1 | agefa | 2A | sec * |
* The food allergy definition variables are included as assessment 'sec' because they link to different questionnaires from assessment 2A.
