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. 2025 Nov 7;25:3856. doi: 10.1186/s12889-025-25128-3

Table 2.

Descriptive statistics of the variables

Variable Definition of variable Mean Std. dev.
Dependent variable Parents’ mental health / 32.6374 7.8917
Independent variable Children’ s digital literacy (CDL) / 0.3706 0.1842
Control variables Age Age of individuals 54.1543 8.2490
Gender Male = 1, Female = 0 0.4721 0.4993
Marriage Married or cohabiting = 1, Single = 0 0.9405 0.2365
Education Primary and below = 0, Junior = 1, Senior = 2, University and above = 3 0.2503 0.5919
Family size Number of household members 4.7206 1.5512
Sibling Number of siblings within the household 0.1751 0.4236
Household net assets Logarithm of household net assets 12.9729 1.2663
Expenditure on commercial insurance Logarithm of average annual household expenditure on commercial insurance 3.7845 4.1992
Pension Yes = 1, No = 0 0.4112 0.4921
Government subsidy Yes = 1, No = 0 0.4670 0.4990
GDP Logarithm of gross domestic product 10.9403 0.3997
Health institution Number of health institutions per 10,000 people 8.1409 2.6478
Health technician Number of health technicians per 1,000 people 7.1104 1.1256
Bed Number of beds per 10,000 people 64.0116 9.6450
Urban Urban = 1, Rural = 0 0.5340 0.4989
Area Eastern = 1, central = 2, Western = 3 1.8697 0.8330