Table 1 Respondent demographics

Number of respondents

70 (21)

141 (43)

29 (9)

90 (27)

330 (100)

45 (15)

70 (23)

29 (10)

157 (52)

301 (100)

Citizenship of host country ^‡

70 (100)

140 (99)

29 (100)

90 (100)

329 (100)

40 (89)

53 (76)

25 (86)

127 (81)

245 (82)

 Primary (up to yr. 5)

1 (1)

–

1 (3)

–

2 (1)

9 (20)

–

5 (17)

–

14 (5)

 Secondary (yr 6–10)

43 (61)

–

18 (62)

–

61 (20)

29 (64)

1 (1)

23 (79)

2 (1)

55 (18)

 Secondary (yr 11–12)

26 (27)

34 (25)

10 (35)

11 (12)

81 (25)

7 (16)

42 (60)

1 (23)

71 (45)

121 (40)

 University

–

106 (75)

–

79 (88)

185 (56)

–

27 (39)

–

84 (54)

110 (37)

Home Internet connection (yes)

67 (96) ^a

133 (95)

24 (83) ^a,*

87 (97) *

311 (94)^!

45 (100)

70 (100)

28 (97)

153 (98)

296 (98)^!

Internet hours/day Median (IQR)

1.5 *** (0.5–2.0)

3.5 *** (1.5–3.5)

1.5 ** (1.5–1.5)

3.5 ** (1.5–3.5)

1.5^††† (1.5–3.5)

3.5 * (3.5–5.0)

6.5 ^b, * (3.5–6.5)

3.5 (3.5–6.5)

3.5 ^b (3.5–6.5)

3.5 ^††† (3.5–6.5)

Lifetime consumption of alcohol (yes)

33 (47) ***

115 (82) ***

15 (52) *

70 (78) *

233 (71)^!!!

37 (82) *

67 (96) *

20 (69) **

145 (92) **

269 (89)^!!!

Any alcohol in the last 4 weeks (yes)

15 (21) *

79 (56) *

6 (21)

42 (47)

142 (43)^!!!

30 (67) ^b

58 (83)

9 (31)^b,***

123 (78)***

220 (86)^!!!

Usual drinks Median (IQR)

3.5 *** (2.0–4.5)

5.5 ^b, *** (3.5–7.5)

3.5 (1.75–5.5)

3.0 ^b (2.0–5.5)

4.5^††† (3.5–7.5)

3.5 (2.0–4.0)

3.5 ^c (2.0–7.5)

1.0 *** (0.0–2.0)

2.0 ^c, *** (1.0–3.5)

2.75 ^††† (1.0–3.5)