Table 4 Participants’ knowledge regarding iodine sources, population groups at risk of iodine deficiency and diet-disease relationships ⁱ⁾

 Iodised salt

42.9 (159)^a

32.3 (130)^b

32.2 (156)^b

31.3 (125)^b

64.5 (258)^c

54.6 (219)^c

42.6 (1047)

 Fish

59.3 (220)^a,b

49.9 (201)^a

60.5 (293)^b

56.7 (223)^a,b

38.8 (155)^c

29.7 (119)^c

49.4 (1211)

 Milk

3.0 (11)^a,c

4.0 (16)^a,c,d

1.2 (6)^a

9.5 (38)^b

5.8 (23)^b,c

8.2 (33)^b,d

5.2 (127)

 Seaweed

49.3 (183)^a

16.9 (68)^b

26.2 (127)^c

25.0 (100)^b,c

32.0 (128)^c

61.1 (245)^d

34.6 (851)

 Soya sauce

15.6 (58)^a

6.5 (26)^b,c

4.5 (22)^b

7.0 (28)^b,c

11.0 (44)^a,c

17.7 (71)^a

10.1 (249)

 Do not know

23.2 (86)^a,d

34.0 (137)^b

28.7 (139)^a,b

29.0 (116)^a,b

11.0 (44)^c

15.2 (61)^c,d

23.7 (583)

 Athletes

49.6 (184)^a

17.4 (70)^b

35.7 (173)^c

37.3 (149)^c

51.3 (205)^a

51.9 (208)^a

40.2 (989)

 Elderly

26.7 (99)^a,c

5.7 (23)^b

21.3 (103)^a

6.0 (24)^b

25.3 (101)^a,c

30.4 (122)^c

19.2 (472)

 Pregnant

32.9 (122)^a,c

13.6 (55)^b

18.0 (87)^b

12.5 (50)^b

41.5 (166)^a

28.7 (115)^c

24.2 (595)

 Lactating

18.6 (69)^a

9.4 (38)^b

10.7 (52)^b

5.8 (23)^b

20.3 (81)^a

27.2 (109)^a

15.1 (372)

 Vegetarians

22.1 (82)^a

9.9 (40)^b

7.9 (38)^b

7.0 (28)^b

13.3 (53)^b

24.2 (97)^a

13.7 (338)

 Vegans

36.1 (134)^a

13.4 (54)^b

13.6 (66)^b

10.5 (42)^b

15.8 (63)^b

34.9 (140)^a

20.3 (499)

 Do not know

25.1 (93)^a

62.3 (251)^b

49.4 (239)^c

51.8 (207)^c

17.5 (70)^a

25.2 (101)^a

39.1 (961)

 Obesity

11.7 (40)^a

14.6 (59)^a

12.2 (59)^a

12.5 (50)^a

22.8 (91)^b

26.4 (106)^c

16.7 (405)

 Poor cognitive development

18.7 (64)^a,b

12.2 (49)^a

24.5 (118)^b,d

24.8 (99)^b,c,d

30.8 (123)^d

47.1 (189)^e

26.4 (642)

 Hypertension

20.4 (70)^a,b

27.3 (110)^a,d

21.7 (105)^a,b

15.8 (63)^b

43.5174)^c

36.9 (148)^c,d

27.6 (670)

 Skin rash

12.0 (41)^a,b

7.4 (30)^a

12.5 (60)^a,b

13.3 (53)^a,b

19.3 (77)^b

28.4 (114)^c

15.5 (375)

 Thyroid disorders

48.7 (170)^a

23.6 (95)^b

44.2 (213)^a

45.0 (180)^a

72.2 (288)^c

70.8 (284)^c

50.5 (1230)