Parents of young participants participating in general assessment 1A received 1A General Questionnaire during their child's 1A Visit 1. Parents of n = ~12,000 children filled it in at home and sent or brought it back to Lifelines.
The questionnaire contained the following sections and subsections:

• Education
• Household composition
• Personal data

• Acne
• Allergies
• Cold/Flu
• Diabetes
• Digestive symptoms
• Diseases (other)
• Ear conditions
• Eye conditions (general)
• Insomnia
• Kidney & bladder diseases
• Musculoskeletal symptoms
• Respiratory diseases
• Respiratory problems (general)
• Skin conditions
• Throat conditions

• Alcohol use
• Drug use
• Electronic device use
• Exposure to smoking
• Hobbies & activities
• Home environment (general)
• Physical activity (sports)
• Pets & livestock
• Smoking & tobacco use

• Hospitalization
• Medication
• Surgery
• Vaccination

• Family functioning (FAD)
• Learning difficulties

• Diet (general)

• Daycare use
• Menstruation
• Mental development
• Physical development

• Subjective health (general)