Table 1 Comparison of socio-demographic characteristics of participants with and without internet addiction

Number of participants

120

21.2

446

78.8

566

100.0

Mean age (SD)

21.8

(3.9)

21.4

(3.7)

21.5

3.8

0.32*

 Male

52

23.6

168

76.4

220

38.9

0.26**

 Female

68

19.7

278

80.4

346

61.1

 ≤ High school

5

17.2

24

82.8

29

5.1

0.59**

 > High school

115

21.4

422

78.6

537

94.9

 The Kinh ethnicity

116

21.5

424

78.5

540

95.4

0.46**

 Other ethnicities

4

15.4

22

84.6

26

4.6

 Cult of Ancestor

109

22.5

376

77.5

485

85.7

0.70**

 Other religions

11

13.6

70

86.4

81

14.3

 Single

94

22.0

333

78.0

427

75.4

0.41**

 Living with spouse/partner

26

18.7

113

81.3

139

24.6

 Renting a hostel

62

23.4

203

76.6

265

46.8

0.45***

 Staying in dormitory

16

22.9

54

77.1

70

12.4

 Living with family

36

20.1

143

79.9

179

31.6

 Living with relatives

5

11.6

38

88.4

43

7.6

 Other liver arrangements

1

11.1

8

88.9

9

1.6

 High

1

7.7

12

92.3

13

2.3

0.09***

 Average

99

20.2

392

79.8

491

86.8

 Low

18

32.7

37

67.3

55

9.7

 Very low

2

28.6

5

71.4

7

1.2