Table 4 Exposure after the accident associated with occurrence of symptoms in the case-control analysis

Age (mean, range)

29.9, 8m-77yr

26.8, 8m-72yr

1.0

0.97–1.04

Sex (female/male)

23/23

17/21

1.3

0.4–4.2

Presence in the house between 10–13 December

42

32

1.9

0.2–24.3

Consumption of tap water

21

3

7.8

1.3–48.1

Consumption of food prepared with tap water

34

13

8.6

1.9–39.8

Shower/bath

41

24

1.6

0.4–7.7

Direct exposure to vapors from basement

34

18

10.4

2.3–47.4

Floor of the apartment (continuous)

0.7

0.5–0.96