Table 3. Maximum likelihood estimates of effects in the best-approximating model of AIV infection in BC.
| Variable | Term | MLE | SE | 95% CI |
|---|---|---|---|---|
| Intercept | -2.033 | 0.246 | -2.515, -1.551 | |
| Sex (ref = Female) | Male | 0.354 | 0.101 | 0.156, 0.553 |
| Species (ref = MALL) | AGWT | -0.975 | 0.363 | -1.687, -0.264 |
| AMWI | -0.463 | 0.498 | -1.440, 0.513 | |
| BWTE | -0.679 | 0.3500 | -1.364, 0.007 | |
| NOPI | -1.054 | 0.437 | -1.911, -0.197 | |
| Year (ref = 2005) | 2006 | -1.025 | 0.126 | -1.273, -0.778 |
| 2007 | -1.593 | 0.158 | -1.903, -1.283 | |
| 2008 | -1.228 | 0.235 | -1.688, -0.768 | |
| 2010 | -0.762 | 0.257 | -1.267, -0.258 | |
| Sampling location (ref = Alaksen) | Minnie Lake | 2.127 | 0.235 | 1.666, 2.587 |
| Nicola Lake | 2.565 | 0.2300 | 2.114, 3.015 |
The model was fitted as a generalized linear model with a sample size of 2281. All values shown are on the logit scale. Exponentiation of estimates provides the odds ratio interpretation of effect size. MLE is the maximum likelihood estimate of the parameter, SE is the standard error of the estimate, and 2.5% and 97.5% values define the 95% confidence interval around the MLE.
Abbreviations: MALL: A. platyrhynchos, AGWT: A. carolinensis, AMWI: A. americana, BWTE: A. discors, NOPI: A. acuta