Table 1.
Categorization of Variables
| Variable name | Categorization |
|---|---|
| Demographic characteristics | |
| Age | Aged 60–69 = 0, Aged 70–79 = 1, or Aged 80+ = 2 |
| Gender | Female = 0, male = 1 |
| Registered residence | Rural = 0, urban = 1 |
| Years of education | No education = 0, 1–6 years = 1, or 7 or more years of education = 2 |
| Pre-retirement occupation | A dichotomized variable - 1 if the participants had a formal job before retirement, 0 if not. |
| Security factors | |
| National health insurance enrollment | Enrolled in Urban Employer Medical Scheme, UEMS = 0, Enrolled in Urban Resident Medical Scheme, URMS = 1, Enrolled in New Rural Cooperative Medical System, NRCMS = 2 |
| Monthly income (RMB) | Less than 1000 = 0, 1000–1999 = 1, 2000–2999 = 2, 3000–3999 = 3, or more than 4000 = 4 |
| Live with a spouse | A dichotomized variable - 1 if the participants’ have living spouse, 0 if not |
| Number of children | One child or 0 = 0, two children = 1, three children = 2, and four or more children = 3 |
| Frequency of children visiting parents | Everyday = 0, weekly = 1, semimonthly = 2, monthly+ = 3 |
| Primary caregiver | Spouse = 0, children = 1, oneself = 2, and others = 3 |
| Perceived adequacy of senior care received | A dichotomized variable - 1 if the participants could receive adequate senior care, 0 if not |
| Health factors | |
| Self-reported health | A dichotomized variable - well = 0 and worse = 1 |
| Any IADL disability | A dichotomized variable −1 if the participants needed any help performing the following tasks: visiting neighbors, washing clothes, walking 1 kilometer, shopping, cooking, lifting 5 kg, crouching, and standing up three times, and using public transportation, 0 if not |
| Hospitalization within a year | Yes = 1, no = 0 |
| Any chronic diseases | A dichotomized variable - 1 if the participants reported hypertension, heart diseases, cerebrovascular diseases, or other diseases, 0 if not |
| Frequency of physical examination | Half a year = 0, annually = 1, biennial = 2, and more than 2 years = 3 |
| Participation factors | |
| Smartphone use | A dichotomized variable - 1 if the participants used smartphone, 0 if not |
| Familiarity with smart senior care | A metataxonomic variable, according to the participants’ stated knowledge about smart senior care. Know very well = 0, just heard of = 1, incomprehension = 2 |
| Attitude towards smart senior care | A dichotomized variable - 1 if the participants were supportive of smart senior care, 0 if not |