Table 3.
Final multivariate analysis results
| Potential risk factors | Beta coefficient | S.E. | Wald statistic | P value | maORa | 95 % CI | |
|---|---|---|---|---|---|---|---|
| Use tap filter | 1.00 | 0.349 | 8.27 | 0.004 | 7.5 | 1.9 | 29 |
| Drink untreated or raw water | 1.05 | 0.395 | 7.02 | 0.008 | 8.1 | 1.7 | 38 |
| Swim or go into artificial water | Rb | ||||||
| Gardening | −0.751 | 0.270 | 7.76 | 0.005 | 0.22 | 0.08 | 0.64 |
| Contact with cat | R | ||||||
| Attend a barbeque | −0.654 | 0.237 | 7.64 | 0.006 | 0.27 | 0.11 | 0.68 |
| Attend a social gathering | R | ||||||
| Shop for food in farmers market | R | ||||||
| Food from fast food chain restaurant | −0.559 | 0.236 | 5.61 | 0.018 | 0.33 | 0.13 | 0.82 |
| Food from eat-in restaurant | R | ||||||
| Food from ready-to-eat | −1.06 | 0.360 | 8.76 | 0.003 | 0.12 | 0.03 | 0.49 |
| Male | R | ||||||
aMatched adjusted odd ratio (bold indicates statistically significant results)
bR = removed during the backward elimination process