Parents of young participants participating in general assessment 1A (“Baseline”) received four questionnaires: the 1A General Questionnaire, the 1A Birth Questionnaire, the 1A Behavior Questionnaire and the 1A Food Questionnaire.

Age distribution for 1A Child questionnaires:

The 1A Food Questionnaire contained the following sections and subsections:

• Personal data

• Children's diet (FFQ-TNO)
• Children's diet (general)