Table 4. Statistics for hurdle and antibody level models.
| MODEL | Hendra virus | Cedar virus | Tioman virus | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HURDLE | Estimate | OR (95% CI) | SE | Z value | P value | Estimate | OR (95% CI) | SE | Z value | P value | Estimate | OR (95% CI) | SE | Z value | P value |
| Intercept | -0.311 | - | 0.204 | -1.526 | 0.127 | -0.996 | - | 0.221 | -4.5 | <0.001 | . | . | . | . | . |
| Adult male | -0.036 | -1.04 | 0.308 | -0.118 | 0.906 | -0.298 | -1.34 | 0.352 | -0.847 | 0.397 | . | . | . | . | . |
| Female Not Preg | 0.04 | 1.04 | 0.313 | 0.127 | 0.899 | 0.407 | 1.5 | 0.33 | 1.235 | 0.217 | . | . | . | . | . |
| Female Preg | 0.057 | 1.05 | 0.379 | 0.151 | 0.88 | -0.587 | -1.8 | 0.471 | -1.246 | 0.213 | . | . | . | . | . |
| BCI centred | 1.3 | 3.67 | 0.416 | 3.126 | 0.002 | -0.27 | 1.31 | 0.451 | -0.598 | 0.55 | . | . | . | . | . |
| ANTIBODY LEVEL | Estimate | SE | Z value | P value | Estimate | SE | Z value | P value | Estimate | SE | Z value | P value | |||
| Intercept | 8.717 | 0.218 | 40.027 | <0.001 | 7.616 | 0.347 | 21.96 | <0.001 | 7.543 | 0.07 | 108.318 | <0.001 | |||
| Adult male | 0.067 | 0.228 | 0.295 | 0.768 | 0.365 | 0.308 | 1.185 | 0.236 | 0.227 | 0.062 | 3.667 | <0.001 | |||
| Female Not Preg | -0.15 | 0.205 | -0.732 | 0.464 | 0.133 | 0.316 | 0.42 | 0.675 | 0.161 | 0.068 | 2.374 | 0.018 | |||
| Female Preg | 0.865 | 0.281 | 3.073 | 0.002 | 0.797 | 0.446 | 1.787 | 0.074 | 0.394 | 0.084 | 4.685 | 0 | |||
| BCI centred | 0.346 | 0.315 | 1.099 | 0.272 | -0.113 | 0.461 | -0.245 | 0.806 | 0.097 | 0.091 | 1.064 | 0.287 | |||
| 16-Feb | 0.715 | 0.258 | 2.766 | 0.006 | 0.436 | 0.469 | 0.93 | 0.353 | -0.107 | 0.087 | -1.231 | 0.218 | |||
| 16-Aug | -0.218 | 0.295 | -0.739 | 0.46 | -0.045 | 0.489 | -0.092 | 0.927 | -0.066 | 0.086 | -0.761 | 0.447 | |||
| 17-Feb | -0.209 | 0.291 | -0.719 | 0.472 | 0.78 | 0.43 | 1.813 | 0.07 | -0.122 | 0.091 | -1.341 | 0.18 | |||
| 17-Aug | -0.583 | 0.271 | -2.152 | 0.031 | 0.093 | 0.477 | 0.194 | 0.846 | -0.192 | 0.088 | -2.191 | 0.028 | |||
| 18-Feb | 0.374 | 0.336 | 1.113 | 0.266 | 0.645 | 0.531 | 1.213 | 0.225 | 0.087 | 0.096 | 0.907 | 0.365 | |||
Odds ratios (OR), estimates, standard errors (SE), Z values and P values for negative binomial hurdle and antibody level models for Hendra virus, Cedar virus and Tioman virus serology for Grey-headed flying foxes sampled between August 2015 and February 2018. Reference values relate to sub-adults (both male and female) for the hurdle and antibody level model and for the first catching session (August 2015) for the antibody level model. Preg = pregnant. BCI centred = body condition index centred around the mean values. CI = confidence interval.