No. of piglets | No (%) of IC + piglets | Logistic regression parameters | |||
---|---|---|---|---|---|
OR | 95% CI (OR) | P | |||
MLN | |||||
Negative | 320 | 53 (16.6) | 1 | ||
Positive | 175 | 125 (71.4) | 10.27 | 6.31, 16.86 | < 0.001 |
Season | |||||
Winter | 176 | 99 (56.3) | 1 | ||
Spring | 222 | 48 (21.6) | 0.35 | 0.21, 0.58 | < 0.001 |
Summer | 97 | 28 (28.9) | 0.38 | 0.19, 0.75 | 0.006 |