Adult and elderly Lifelines participants participating in general assessment 1A (“Baseline”) received two follow-up questionnaires, 1B and 1C.
1C was sent out on average xx months (+/- yy months) after 1A Questionnaire 2.
1C was sent out on average xx months (+/- yy months) after 1B.
1C was followed by 2A Questionnaire 1 after on average xx months (+/- yy months).

Of all participants that filled out 1C (n = ~32,000), 95% of participants filled in a paper variant whereas 5% filled in a digital variant.

1C contained the following sections and subsections:

• Education
• Family composition
• Household composition
• Personal data
• Profession
• Work history
• Employment status

• Bronchial Hyperresponsiveness (BHQ)
• Cancer
• Cardiovascular diseases
• Connective Tissue Disease (CSQ)
• Diabetes
• Digestive diseases
• Diseases (other)
• Fatigue (general)
• Kidney & bladder diseases
• Mental illnesses
• Musculoskeletal conditions
• Neurological disorders
• Respiratory diseases
• Symptoms (general)
• Symptoms (SCL-90)

NB: Only elderly participants (65+) were asked these questions

• Independence

• Exposure to noise
• Exposure to radiation
• Home environment (general)
• Informal care
• Physical activity (SQUASH)
• Physical activity (general)
• Self-management (SMAS)
• Sleep (ESS)
• Smoking & tobacco use
• Volunteer work

• Hospitalization
• Medication
• Surgery
• Treatment (general)

• Quality of Life (RAND)
• Personality (GAS)
• Personality (Type-D)
• Stress (LDI)
• Stress (LTE)
• Work psychology (general)

NB: The three FFQ petals (A/B/C) were distributed over three questionnaires (1B, 1C and 2A Questionnaire 1), so that each participant received the petals in one of six possible orders (ABC, ACB, BAC, BCA, CAB, or CBA).

• Macronutrients (FFQ-h)
• Petal A (FFQ-a)
• Petal B (FFQ-b)
• Petal C (FFQ-c)

• Anthropometry (self-reported)