Table 3.
Logistic regression comparing risk factors for being infected by a ruminant attributed type (control) with those for an unassigned type (case).
| Predictor | Unit | OR (95% CIs) | z-value | p-value |
|---|---|---|---|---|
| Intercept | NA | 8.094 | < 0.001 | |
| Age | Child | 1 | - | - |
| Adult | 1.524 (1.156, 2.008) | 2.994 | 0.003 | |
| Season | Summer | 1 | - | - |
| Winter | 1.919 (1.399, 2.632) | 4.035 | < 0.001 | |
| Overseas travel | No | 1 | ||
| Yes | 4.808 (3.165, 7.299) | 7.377 | < 0.001 | |
| Population dens | < = 500/km2 | 1 | - | - |
| > 500/km2 | 1.359 (1.071, 1.724) | 2.520 | 0.012 | |
| Season * pop.dens | Summer * < = 500/km2 | 1 | - | - |
| winter * > 500/km2 | 0.605 (0.395, 0.926) | -2.316 | 0.021 | |