Table 2.
Measures of health and fitness before and after bovine tuberculosis (bTB) infection
| Model | Estimate (SE)[Link] | t‐value | p value* |
|---|---|---|---|
| A. Average body condition (n = 33) | 3.936 (0.263) | 14.965 | <0.001 |
| Time (after bTB) | −0.685 (0.116) | −5.914 | <0.001 |
| Conversion age (years) | −0.131 (0.042) | −3.127 | 0.004 |
| Lung pathology residuals | −0.018 (0.007) | −2.358 | 0.025 |
| Herd (Lower Sabie) | 0.528 (0.123) | 4.288 | <0.001 |
| B. Average reproductive rate (n = 33)[Link] | −0.784 (0.192) | −4.088 | <0.001 |
| Time (After bTB) | 0.385 (0.082) | 4.693 | <0.001 |
| Conversion age (years) | 0.188 (0.053) | 3.562 | 0.001 |
| Lung pathology residuals | −0.014 (0.005) | −2.612 | 0.015 |
| Treatment (bolus) | −0.126 (0.092) | −1.374 | 0.181 |
| Herd (Lower Sabie) | 0.183 (0.087) | 2.117 | 0.044 |
| Age at first capture | −0.012 (0.057) | −0.022 | 0.829 |
Estimates for each multi‐level factor are interpreted as the difference relative to the reference level, given the factor level in parentheses.
The model for reproductive fitness (B) includes years in study as an offset term to control for differences in observation period.
a
p values were estimated using a linear mixed effects model fit by maximum likelihood.