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. 2021 Aug 25;9:706279. doi: 10.3389/fpubh.2021.706279

Table 1.

Descriptive statistics.

Mean Standard deviation Min Max
Dependent variables
Relationship 3.96 0.73 1 5
Happiness 3.69 0.85 1 5
Physical health 2.34 0.73 1 5
Illness 6.11 3.39 0 16
Mental health 1.88 1.35 0 4
ADL 0.70 1.30 0 5
Independent variables
Number of children 4.38 2.12 1 14
Living with a son (1 = Yes, 0 = No) 0.55 0.50 0 1
Living with a daughter (1 = Yes, 0 = No) 0.28 0.45 0 1
Child quality (1 = Yes, 0 = No)
Primary education 0.08 0.28 0 1
Lower secondary education 0.25 0.43 0 1
Upper secondary education 0.28 0.45 0 1
Vocational training or above 0.35 0.48 0 1
Parent's characteristics
Age 66.00 11.30 50 100
Age at birth of the first child 25.57 5.37 15 55
Male (1 = Yes, 0 = No) 0.43 0.50 0 1
Married (1 = Yes, 0 = No) 0.70 0.46 0 1
Not working (1 = Not working, 0 = Working) 0.46 0.50 0 1
Kinh (majority) ethnicity (1 = Yes, 0 = No) 0.90 0.30 0 1
Religious (1 = Yes, 0 = No) 0.81 0.40 0 1
Primary education (1 = Yes, 0 = No) 0.18 0.38 0 1
Lower secondary education (1 = Yes, 0 = No) 0.22 0.42 0 1
Upper secondary or above (1 = Yes, 0 = No) 0.16 0.37 0 1
Log of income 1.15 0.27 1 2
Housing characteristics
Log of house area (in m2) 4.11 0.61 2 6
Permanent house (1 = Yes, 0 = No) 0.32 0.47 0 1