Agriculture, Alcohol use, Alcohol use disorders, Alzheimer's disease and other dementias, Analgesics, Anthropometry, Anxiety, Anxiety disorders, Blood glucose, Blood pressure, Blood tests, Body mass index, COPD, Calcium, Cancers, Cholesterol tests, Cirrhosis of the liver, Cognitive assessment, Diabetes, Diagnosis, Disability, Down's syndrome, Drug consumption, Education, Employment, Epilepsy, Folic acid, Folic acid deficiency, Folic acid supplements, Glucose tests, Health care use, Health status, Hearing loss, Heart disease, Heart failure, Height, Hospitals, Hypertension, Hyperthyroidism, Hypothyroidism, Illicit drug use, Incontinence, Insulin, Iron, Iron deficiency, Ischemic heart disease, Ischemic stroke, Languages, Leisure activities, Literacy, Marital status, Marriage age, Mass media, Medicines, Mental and behavioral disorders, Mental health symptoms, Micronutrient supplements, Mobility aids, Multiple sclerosis, Musculoskeletal diseases, Neurological conditions, Nutritional deficiencies, Occupations, Parkinson's disease, Peptic ulcer disease, Peripheral vascular diseases, Physical activity, Physical examinations, Rehabilitation, Seizures, Sleep disorders, Stroke, Syphilis, Tobacco and nicotine use, Unemployment, Urine tests, Visual acuity, Vitamin D supplements, Weight