Table 1 Symptoms reported at follow-up among respondents in the Östersund and Skellefteå studies, and its association with case status, Sweden 2011

Weight loss

23 (7)

10 (2)

4.0 (1.9–9.0)

6 (4)

13 (2)

1.6 (0.5–4.2)

Watery diarrhea

36 (12)

18 (4)

3.4 (1.9–6.3)

22 (15)

27 (5)

2.8 (1.5–5.1)

Diarrhea

55 (18)

30 (6)

3.3 (2.0–5.3)

26 (17)

26 (5)

3.6 (2.0–6.6)

Abdominal pain

59 (19)

46 (9)

2.1 (1.4–3.3)

28 (19)

38 (7)

2.7 (1.5–4.6)

Rigid joints

37 (12)

38 (8)

2.1 (1.2–3.5)

13 (9)

32 (6)

1.5 (0.7–3.1)

Joint pain

34 (11)

39 (8)

2.0 (1.2–3.3)

21 (14)

44 (8)

2.0 (1.1–3.6)

Loss of appetite

48 (15)

42 (8)

2.0 (1.3–3.1)

18 (12)

37 (7)

1.5 (0.8–2.8)

Fatigue

80 (26)

78 (16)

1.9 (1.3–2.8)

40 (27)

75 (14)

2.0 (1.2–3.2)

Nauseas

44 (14)

40 (8)

1.7 (1.1–2.7)

27 (18)

53 (10)

1.8 (1.1–3.1)

Headache

74 (24)

77 (15)

1.7 (1.2–2.5)

39 (26)

97 (18)

1.4 (0.9–2.3)

Joint discomfort

28 (9)

35 (7)

1.7 (1.0–2.9)

-

-

-

Ocular pain

31 (10)

35 (7)

1.6 (1.0–2.7)

17 (11)

36 (7)

1.7 (0.9–3.1)

Swollen joints

12 (4)

18 (4)

1.5 (0.7–3.3)

7 (5)

21 (4)

1.2 (0.4–2.9)

Vomiting

20 (6)

34 (7)

0.9 (0.5–1.5)

10 (4)

25 (5)

1.1 (0.5–2.3)

Bloody diarrhea

2 (1)

2 (0)

3 (2)

0 (0)

-