Table 1

The main contents of the questionnaire survey

Questionnaire frameContent description
Basic personal informationName, gender, age, ID number, place of birth, length of local residence, local residential address, telephone number (her/himself+relatives), educational background, nationality, language (minority language), main occupation before 60 years old, etc.
Social network and supportChildbirth (number of sons and daughters), family situation, family financial control, family respect, home care, family function, neighbour/friend relationship, support and assistance, marriage/spouse situation, etc.
SRSS scaleSocial support evaluation, including friends, neighbours, family, asking for help, talking, etc.
Social microenvironmentFamily living area, source of income, annual family income and economic satisfaction.
Religious beliefReligious type, religious activities.
Longevity family surveyLong-lived relatives, family history of genetic disease.
History of chronic diseaseTypes of chronic diseases, hospitalisation, medical insurance, medical expenses in the past year, satisfaction with medical conditions, timely medical treatment, etc.
Health self-assessmentLimitation of activity, physical state, emotional state, pain, self-feeling, etc.
Eating habitsThe number of meals per day, the amount of food, the combination of meals, whether or not breakfast, salt intake, cooking methods, eating speed, taste preference and dietary intake structure/frequency/type.
MNA-SF scaleBMI, psychology, calf circumference, mid-arm circumference diet, etc.
Household drinking waterType/source of drinking water.
SmokingSmoking history, age of first smoking, cigarette type, smoking cessation history, smoking status of family members, secondhand smoke inhalation status.
Alcohol intakeDrinking history, first drinking age, drinking frequency and type.
Tea intakeWhether to drink tea now and in the past, age of first drinking, tea type, daily intake (mL).
Physical exerciseWhether physical exercise is performed now or in the past, age at physical exercise start and end.
Daily and leisure activityHousework, farming, raising poultry, reading, playing mahjong, TV, radio, chat in teahouses, etc.
ADL scaleDaily living ability assessment, including eating, walking, dressing, bathing, etc.
IADL scaleInstrumental assessment of activities of daily living, including cooking, taking medicine, shopping, calling, etc.
Frail scaleFatigue, endurance, walking, illness, weight loss.
PSQI scaleSleep assessment.
MMSE scaleCognitive function assessment, including orientation, memory, attention, calculation, meeting ability, language ability.
GAD-7 scaleAnxiety assessment, including nervousness, worry, irritability, fear, etc.
GDS-15 scaleDepression assessment, including feelings of helplessness, memory, getting help, difficulty, boredom, emptiness, etc.
  • ADL, Activities of Daily Living; BMI, body mass index; GAD-7, Generalised Anxiety Disorder-7; GDS-15, Geriatric Depression Scale-15; IADL, Instrumental Activities of Daily Living; MMSE, Mini-mental State Examination; MNA-SF, Mini Nutritional Assessment-Short Form; PSQI, Pittsburgh Sleep Quality Index; SSRS, Social Support Rating Scale.