Multivariable odds ratios and percent PAR or PPR (and 95% confidence intervals) for food-related risk factors for human campylobacteriosis according to the attributed origin of the <i>Campylobacter</i> strain (chicken, ruminant, and the environment).

<p>Multivariable odds ratios are also adjusted for age, sex, degree of urbanization, season, and level of education. PAR (population attributable risk) and PPR (population preventable risk) are based on the multivariable odds ratios. Risk factors are in bold, protective factors in normal font.</p><p>ns = not significant (<i>p</i>>0.05).</p>*<p>Fraction of imputed missing values in the whole dataset.</p>a)<p>737 cases; mean <i>Pr</i> for chicken = 0.66 (range: 0.00–0.99); mean <i>Pr</i> for ruminants = 0.23 (range: 0.00–0.96); mean <i>Pr</i> for environment = 0.10 (range: 0.00–0.98).</p>b)<p>143 cases; mean <i>Pr</i> for chicken = 0.96; range: 0.95–0.99.</p>c)<p>67 cases; mean <i>Pr</i> for ruminants = 0.87; range: 0.80–0.96.</p>d)<p>34 cases; mean <i>Pr</i> for environment = 0.76; range: 0.50–0.98.