Table 6.
Final negative binomial model of the effects of production cylce year (PC), day and their interaction on attached lice counts (NliceA) (Dataset 2). 2016 omitted due to collinearity
| Coefficient | SE | Z | P > Z | 95% CI | |
|---|---|---|---|---|---|
| First PC | 2.15 | 0.16 | 13.36 | 0 | 1.83–2.46 |
| Day | 0.06 | 0.07 | 0.88 | 0.38 | -0.07–0.19 |
| PC*Day | 0.56 | 0.09 | 5.85 | 0 | 0.37–0.74 |
| Year | |||||
| 2010 | 1.49 | 0.14 | -10.5 | 0 | -1.77– -1.21 |
| 2011 | 0.22 | 0.2 | 1.1 | 0.27 | -0.17–0.62 |
| 2012 | 0.21 | 0.15 | -1.43 | 0.15 | -0.51–0.08 |
| 2013 | 0.04 | 0.21 | 0.19 | 0.85 | -0.37–0.45 |
| 2014 | 0.14 | 0.16 | 0.83 | 0.41 | -0.19–0.46 |
| 2015 | 1.81 | 0.2 | 8.91 | 0 | 1.41–2.2 |
| Intercept | 1.13 | 0.13 | 8.6 | 0 | 0.87–1.39 |
Abbreviations: CI, confidence interval; SE, standard error