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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.