Table 1 Data collected from individual participants
TYPE OF DATA Instrument(s) Collection method | Variables |
|---|---|
DEMOGRAPHIC CHARACTERISTICS Self-report questionnaire designed by researchers Participants finish the questionnaire online while visiting a local community health clinic | 1. Age: Age at the day of data collection |
2. Gender: Biological sex registered on the ID card (male or female) | |
3. Ethnicity: Ethnicity registered on the ID card (Han, Miao and so forth) | |
4. Siblings: Twins, triplets or other siblings with the same parents | |
5. Marital status: Marriage status at the day of data collection, categorized as single, married, cohabiting with significant other, divorced, widowed, and other | |
6. Education level: The highest education level, categorized as primary school, middle school, high-school, university and above | |
7. Religion: Categorized as None, Buddhist, Christian, Islam, Catholicism and other | |
8. Health insurance: Type of health insurance | |
9. Income: Family income per year | |
10. Living status: Living situation such as “where do you live”, “how many roommates” and etc | |
PHYSICAL PARAMETERS Assessed by health workers Participants evaluated at local health clinic | 11. Height |
12. Weight | |
13. Blood pressure | |
14. Heart rate | |
15. History of chronic disease: History of hypertension, diabetes, cardiovascular disease and other chronic disease; specify current treatment (i.e., medications) | |
16. Chronic pain: Whether suffer from pain in the past or now, location and degree of pain, the influence of pain in daily life and etc | |
BIOLOGICAL SAMPLES Collected by health workers in community All participants provide samples at local health clinic and some participants go to regional hospital to have MRI scan | 17. Blood samples: 15 ~ 20 ml venous blood obtained through venipuncture by certified nurses |
18. Urine samples: 10 ~ 15 ml fresh urine collected by participants under supervision of researchers | |
19. Faeces samples: 1 g fresh faeces collected by participants under supervision of researchers | |
20. Hair samples: 20 hairs over 3 cm obtained by researchers | |
21. Brain MRI scan: MRI scan of whole brain will be performed after evaluation of psychological health. All high-risk participants are referred for a brain MRI scan at a regional hospital, and low-risk and moderate-risk participants are given the option of a referral for a brain MRI scan | |
PSYCHOLOGICAL HEALTH Self-reported questionnaires, and scales completed by local physicians, and diagnostic assessments by participating psychiatrists All participants come to the local clinic to complete the questionnaires online and are assessed by local clinicians and some participants are administered formal diagnostic examination by a participating psychiatrist | 22. Personality traits: Big Five Inventory scale |
23. Coping Style: Simplified Coping Style Scale | |
24. Loneliness: UCLA Loneliness Scale | |
25. Depression: PHQ-9 Depression Scale | |
26. Anxiety: GAD-7 Anxiety Scale | |
27. Social support: Multidimensional Scale of Perceived Social Support | |
28. Quality of life: Quality of Life scale | |
29. Sleep quality: Insomnia Severity Index | |
30. Evaluation performed by community clinicians and psychiatrists: Community clinicians will assess the psychological health and risks of depression after participants fill out the self-reported questionnaires. Participants classified as high-risk of depression will be assessed by a psychiatrist (using SCID to determine DSM-5 diagnoses) and undergo a brain MRI scan at a regional hospital (see above) | |
OTHER MEASURES Standard questionnaires and self-report questionnaires, some of which are designed by project researchers Participants come to local health clinic and complete the questionnaires online | 31. Occupation: Occupation type, working intensity, job satisfaction |
32. Lifestyle: Smoking, drinking, exercise, habit, pets and etc | |
33. Childhood exposures: Raised up by who, family background at childhood, abuse or bullying received as a child or adolescent and etc. Additionally, Child Trauma Questionnaire will be used | |
34. Utilization of mental health services: Knowledge and demand of mental health services, how many times do participants actually use this resource | |
35. Life events: Major events in life such as divorce, death of close relatives or friends, and etc. Additionally, Life Events Scale will be used | |
36. Childbearing history (for women): This variable is designed especially for women, including menstruation, pregnancy, miscarriage, and etc |