Table 2.

Overview of all questionnaires in four age cohorts.

	Children (3–5 years)	Young adults (18–25 years)	Middle agers (40–65 years)	Older adults (75–85 years)
HEALTH STATUS
Birth weight	✓	–	–	–
Subjective health	✓	✓	✓	✓
Physical well-being	✓	–	–	–
Mental well-being	✓	–	–	–
Self-worth	✓	–	–	–
Satisfaction with live/health	–	✓	✓	✓
Body weight and weight changes	–	✓	✓	✓
Disease	–	✓	✓	✓
Pain	–	–	–	✓
Functional limitations (LLFDI)	–	–	–	✓
Falls, fear of falling	–	–	–	✓
LIFESTYLE
Smoking	–	✓	✓	✓
Physical activity	✓	✓	✓	✓
Television/computer time	✓	✓	✓	✓
Sleeping duration	✓	–	–	–
EATING BEHAVIOR
Breastfeeding	✓	✓	–	–
Meal habits and special diets	✓	✓	✓	✓
Appetite	–	✓	✓	✓
Nutritional effects of life events	–	✓	✓	✓
Knowledge	–	✓	✓	✓
Attitudes toward nutrition and health	–	✓	✓	✓
Food selection	–	✓	✓	✓
Eating motives (TEMS)	–	✓	✓	✓
Dietary protocol	–	–	–	✓
Food preferences and aversions	–	✓	✓	✓
Food frequency questionnaire	✓	✓	✓	✓
Two 24 h- food lists	✓	✓	✓	✓
SOCIODEMOGRAPHIC
Supervisory relationships	✓	✓	–	–
Living conditions	✓	✓	✓	✓
Marital status	–	✓	✓	✓
Nationality, native language	✓	✓	✓	✓
Education	✓	✓	✓	✓
Professional qualification	✓	✓	✓	✓
Occupational status	✓	✓	✓	✓
Voluntary commitment	✓	✓	✓	✓
Financial status/ income	✓	✓	✓	✓
Social network	–	✓	✓	✓
Chronobiology	✓	✓	✓	✓