|
Variable
|
Levels
|
n
|
Serocon.
|
Coef.
|
SE (Coef.)
|
p value
|
Survival rate ratio (95% CI)
|
Hazard ratio (95% CI)
|
|---|
|
Cohort
|
Cohort 2
|
62
|
42
|
−0.60
|
0.11
|
0.001
|
0.55 (0.39, 0.78)
|
2.73 (1.45, 5.16)
|
|
Cohort 1
|
33
|
16
|
0.00 (ref)
| | |
1.00
|
1.00
|
|
Doe IgM
|
Positive
|
37
|
29
|
−0.42
|
0.16
|
0.008
|
0.65 (0.48, 0.89)
|
2.04 (1.19, 3.54)
|
|
Negative
|
56
|
28
|
0.00 (ref)
| | |
1.00
|
1.00
|
|
Intercept
|
–
|
–
|
–
|
3.89
|
0.35
|
< 0.001
|
–
|
–
|
- In intensively-reared goats in Victoria, Australia, 2014–2015. Interpretation: After adjusting for the effect of cohort, kids born by does that had positive IgM titres (Doe IgM = positive; indicating recent exposure) were 2.04 times more likely to seroconvert within the first 6 months of life compared to those born by IgM seronegative does. Log likelihood = −201.1. Coef. coefficient. Similarly, after adjusting for the effect of farm, kids born by does that had positive IgM titres were 2.23 times (95% CI 1.29, 3.86) more likely to seroconvert within the first 6 months of life compared to those born by IgM seronegative does; see Additional file 3
