Table 5.
Final model for characteristics of piglets associated with seroconversion directed towards H1huN2.
| Variables and categories | Hazard ratio | Confidence interval (95%) | Pvalue |
|---|---|---|---|
|
H1huN2 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 |
Cox proportional hazard model, n = 346 piglets, 140 events.