Volume 14, Number 6—June 2008
Research
Population-Attributable Risk Estimates for Risk Factors Associated with Campylobacter Infection, Australia
Russell J. Stafford*†
, Philip J. Schluter‡†, Andrew J. Wilson*†, Martyn D. Kirk§, Gillian Hall¶, Leanne Unicomb¶#, and the OzFoodNet Working Group
, Philip J. Schluter‡†, Andrew J. Wilson*†, Martyn D. Kirk§, Gillian Hall¶, Leanne Unicomb¶#, and the OzFoodNet Working GroupTable 2
PAR proportions with 95% CIs and community estimates with 95% CrIs for exposures associated with an increased risk for Campylobacter infection in persons >5 y of age, Australia, 2001–2002*†
| Risk factor | No. case-patients | Proportion of case-patients (pi) | aOR | PAR, % | 95% CI | Estimated no. community case-patients | 95% CrI |
|---|---|---|---|---|---|---|---|
| Food exposures | |||||||
| Chicken consumption | |||||||
| No chicken | 110 | 0.155 | Reference | ||||
| Chicken, cooked | 528 | 0.743 | 1.4 | 21.2 | 0.0–36.9 | 35,500 | 0–83,500 |
| Chicken, undercooked | 73 | 0.103 | 4.7 | 8.1 | 5.2–11.1 | 15,000 | 6,000–26,500 |
| Offal consumption | |||||||
| No | 816 | 0.958 | Reference | ||||
| Yes | 36 | 0.042 | 2.0 | 2.1 | 0.0–4.9 | 3,500 | 50–8,500 |
| Nonfood exposures | |||||||
| Dogs (domestic) | |||||||
| No dog | 397 | 0.473 | Reference | ||||
| Dog <6 mo of age | 48 | 0.057 | 2.1 | 2.9 | 0.3–4.8 | 5,000 | 500–11,500 |
| Dog ≥6 mo of age | 394 | 0.47 | 1.2 | – | |||
| Chickens (domestic) | |||||||
| No domestic chickens | 783 | 0.926 | Reference | ||||
| Chickens <6 mo of age | 18 | 0.021 | 12.4 | 1.9 | 0.9–2.9 | 3,500 | 1,000–7,000 |
| Chickens ≥6 mo of age | 45 | 0.053 | 1.7 | – |
*PAR, population-attributable risk; CI, confidence interval; CrI, credible interval.
†Calculated from adjusted odds ratios (aOR) derived from the final multivariable logistic regression model.
