Table 1 Demographic characteristic of samples 1 and 2

Gender

 Male

376

57.49

590

39.78

 Female

273

41.74

661

44.57

 Others

5

0.76

232

15.64

Age

  < 18

42

6.42

54

3.64

 18–25

258

39.45

305

20.57

 26–34

253

38.69

549

37.02

 35–54

85

13

283

19.08

 55–64

10

1.53

111

7.49

  ≥ 65

6

0.92

181

12.22

Occupational information

 Student

143

21.87

146

9.85

 Salesman

158

24.16

349

23.53

 Professional (e.g., accountants, lawyers, medical staff)

214

32.72

469

31.63

 Manager

97

14.83

213

14.36

 Housekeeper

27

4.13

93

6.27

 Others

15

2.29

213

14.36

Highest academic credentials

 High school or below

93

14.22

148

9.98

 College

231

35.33

502

33.85

 Bachelor degree

263

40.21

553

37.29

 Graduate degree or above

67

10.25

280

18.88