Table 2.
Population attributable fractions (PAF in %) with 95% credible intervals (CrI in %) of identified risk factors
| Variable | Cases (n) | Proportion of cases (p) | Adjusted odds ratioa | PAF (95% CrI)b | |
|---|---|---|---|---|---|
| For children 0–4 years old: Other household member having contact with animals other than household pets |
|
|
|
|
|
| No |
28 |
0.549 |
Ref |
- |
|
| Yes |
23 |
0.451 |
4.03 |
16.82 (9.0–23.7) |
|
| Cattle livestock present in meshblock |
|
|
|
|
|
| No |
74 |
0.655 |
Ref |
- |
|
| Yes |
39 |
0.345 |
1.89 |
18.20 (0.6–29.4) |
|
| Contact with animal manure |
|
|
|
|
|
| No |
66 |
0.660 |
Ref |
- |
|
| Yes |
34 |
0.340 |
2.09 |
17.47 (4.4–27.7) |
|
| Contact with recreational waters |
|
|
|
|
|
| No |
97 |
0.866 |
Ref |
- |
|
| Yes |
15 |
0.134 |
2.95 |
9.41 (2.7–16.5) |
|
| Travelled to areas in NZ with interrupted or no main water supply | |||||
| No |
96 |
0.865 |
Ref |
- |
|
| Yes |
15 |
0.135 |
2.43 |
8.17 (0.7–15.7) |
|
| Water supply to home from private bore/spring/creek/or stream | |||||
| No |
89 |
0.802 |
Ref |
- |
|
| Yes | 22 | 0.198 | 1.85 | 9.46 (-2.5–18.8) | |
aAdjusted odds ratios were derived from multivariate logistic regression analysis model using multiple imputations by chained equations (Table 1).
bPAF and 95% CrI were computed based on 1000 simulations.
Ref = reference level for comparison.