Table 1.
Coefficients ± standard errors, p-values and odds ratios (with 95% confidence intervals) of the studied predictors (PAT, ATF and LIC) forced into the multilevel binary regression model to assess their association with the likelihood of Ascaris suum infection.
| B | S.E. | P | Odds Ratio | 95% C.I. for EXP(B) | ||
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| PAT | −0.33 | 0.651 | 0.612 | 0.72 | 0.20 | 2.58 |
| No PAT | Ref. | |||||
| ATF ≤ 2 times per year | 1.35 | 0.69 | 0.052 | 3.84 | 0.99 | 14.92 |
| ATF > 2 times per year | Ref. | |||||
| Definite LIC | 0.75 | 0.362 | 0.040 | 2.11 | 1.04 | 4.29 |
| Ambiguous LIC | 0.15 | 0.449 | 0.748 | 1.16 | 0.48 | 2.80 |
| No LIC | Ref. | |||||
B: coefficients, S.E.: standard errors, C.I.: confidence interval, PAT: application of anthelmintic treatment in pigs, ATF: frequency of anthelmintic treatment in sows, LIC: Lawsonia intracellularis co-infection.