Table 1: Socioeconomic status variables.

CategoriesValueFrequency (%)Variables

GenderMale58.41Male
Female41.59

Age16~25 27.11Young
25~54 54.61
55+18.28Old

EmploymentWorking58.34Working
Student26.85Student
Other14.81

IncomeUnites: RMBIncome

Education(1) Primary; (2) junior; (3) senior; (4) technical secondary school; (5) college; (6) undergraduate; (7) master; (8) Ph.D. Edu