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Volume 9, Number 10—October 2003
Research

Hazards of Healthy Living: Bottled Water and Salad Vegetables as Risk Factors for Campylobacter Infection

Meirion R. Evans*Comments to Author , C. Donald Ribeiro†, and Roland L. Salmon‡
Author affiliations: *University of Wales College of Medicine, Cardiff, United Kingdom; †Cardiff Public Health Laboratory, Cardiff, United Kingdom; ‡Public Health Laboratory Service Communicable Disease Surveillance Centre (Wales), Cardiff, United Kingdom

Main Article

Table 3

Multiple logistic regression analysis showing independently associated variables in campylobacter case-patients and non-case-patientsa

Variable Adjustment Ab
Adjustment Bc
Adjustment Cd
Attributable fraction (%) (95% CI)
OR
(95% CI) p value Odds ratio
(95% CI) p value OR
(95% CI) p value
Lamb
 0.67 (0.46 to 0.99)
 0.05
 0.69 (0.48 to 1.00)
 0.05
 0.68 (0.47 to 0.98)
 0.04
Chicken
 1.61 (1.03 to 2.50)
 0.04
 2.01 (1.35 to 3.00)
 0.001
 1.79 (1.19 to 2.69)
 0.005
 31 (9 to 48)
Salad vegetables
 1.73 (1.09 to 2.73)
 0.02
 1.99 (1.40 to 2.82)
 <0.001
 1.53 (1.06 to 2.21)
 0.02
 21 (2 to 36)
Bottled water
 1.39 (0.98 to 1.96)
 0.06
 1.57 (1.15 to 2.14)
 0.005
 1.41 (1.02 to 1.95)
 0.04
 12 (0 to 23)
Ate at a fried chicken outlet
 1.82 (1.00 to 3.30)
 0.05
 2.08 (1.20 to 3.62)
 0.01
 1.94 (1.10 to 3.42)
 0.02
 4 (0 to 7)
Had contact with cows or calves
 5.44 (1.05 to 28.10)
 0.04
 3.98 (1.08 to 14.65)
 0.04
 5.07 (1.30 to 19.74)
 0.02
 1 (0 to 3)
Own a pet rabbit
 0.46 (0.20 to 1.05)
 0.07
 0.36 (0.16 to 0.81)
 0.01
 0.37 (0.16 to 0.83)
 0.015
History of lower bowel problems
 0.55 (0.34 to 0.90)
 0.02
 0.48 (0.29 to 0.79)
 0.004
 0.45 (0.27 to 0.73)
 0.001
Had antibiotic in month before illness 0.34 (0.18 to 0.65) 0.001 0.41 (0.21 to 0.78) 0.006 0.40 (0.21 to 0.77) 0.006

aOR; odds ratio; CI, confidence interval.
bAdjustment A, adjusted for potential confounders within each exposure group.
cAdjustment B, adjusted for other significant variables from all four exposure groups.
dAdjustment C, adjusted for age group.

Main Article

Page created: January 10, 2011
Page updated: January 10, 2011
Page reviewed: January 10, 2011
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