Table 5 Final model for characteristics of piglets associated with seroconversion directed towards H1 hu N2.
Variables and categories | Hazard ratio | Confidence interval (95%) | P value |
|---|---|---|---|
H1 hu N2 HI titre of the dam | < 0.001 | ||
(7 days after farrowing) | |||
Low (≤ 5.3) | 5.1 | 3.1 – 8.5 | |
Moderate (]5.3-7.3]) | 2.3 | 1.3 – 4.1 | |
High (> 7.3) | - | - | |
Age at infection time (days) | < 0.001 | ||
No detected infection | - | - | |
≤ 50 | 0.2 | 0.1 – 0.5 | |
]50 – 80] | 1.1 | 0.6 – 1.9 | |
> 80 | 4.6 | 2.6 – 8.2 |