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Table 1 Matched odds ratio for selected exposures

From: Restaurant outbreak of Legionnaires' disease associated with a decorative fountain: an environmental and case-control study

Activity

Cases (%) N = 13*

Controls (%) N = 52*

Matched OR

95%CI

Passed through grid E3

10/13 (77)

12/52 (21)

10.3

2.1–100.9

Passed through grid E4

9/13 (69)

15/52 (29)

6.8

1.3–68.5

Passed through grid F4

9/13 (69)

12/52 (23)

9.1

1.7–90.9

Passed through grid F5

9/13 (69)

15/52 (29)

12.1

1.5–558.5

Passed through grid F7

11/13 (85)

23/52 (44)

6.5

1.3–65.4

Passed through grid F8

10/13 (77)

18/52 (35)

4.9

1.2–29.3

Passed through grid H6

12/13 (92)

31/52 (60)

12.0

1.3–597.4

>1.5 hours outdoors weekdays

9/13 (69)

30/52 (57)

1.6

0.4–8.0

>1.5 hours outdoors weekends

6/13 (46)

30/52 (57)

0.65

0.2–2.5

Visited any restaurant

13/13 (100%)

29/52 (56)

17.7

2.5–8

Reported eating in Restaurant A on first contact with SDDH

6/11 (55)

0/44 (0)

32.7

4.7–8

Visited any food store

7/13 (54)

38/52 (73)

0.5

0.1–1.9

Visited any medical center

7/13 (54)

43/52 (83)

0.2

0.03–1.1

Traveled on main city thoroughfare

10/12 (83)

33/48 (69)

2.2

0.4–22.0

  1. *Denominators vary as not all case-patients answered all questions or were excluded because they were unsure.