Table 7 Final zero-inflated negative binomial model of the effects of PC. day and their interaction on adult lice counts (NliceM) (Dataset 2). 2016 omitted due to collinearity
Coefficient | SE | Z | P > Z | 95% CI | |
|---|---|---|---|---|---|
Negative binomial portion of model | |||||
First PC | 1.62 | 0.16 | 10.34 | 0 | 1.31–1.93 |
Day | 0.19 | 0.07 | 2.78 | 0.01 | 0.05–0.32 |
First PC*Day | -0.26 | 0.09 | -2.82 | 0.01 | -0.43– -0.08 |
Year | |||||
2010 | -0.71 | 0.13 | -5.62 | 0 | -0.96– -0.47 |
2011 | 0.53 | 0.19 | 2.87 | 0 | 0.17–0.9 |
2012 | -0.98 | 0.14 | -6.96 | 0 | -1.26– -0.71 |
2013 | 0.06 | 0.21 | 0.26 | 0.79 | -0.37–0.48 |
2014 | -1.71 | 0.15 | -11.62 | 0 | -1.99– -1.42 |
2015 | 0.33 | 0.2 | 1.68 | 0.09 | -0.06–0.72 |
Intercept | 1.94 | 0.14 | 14.31 | 0 | 1.67–2.2 |
Alpha | 1.4 | 0.1 | 1.23–1.6 | ||
Logistic (inflation) portion of model | |||||
Day | -1.08 | 0.23 | -4.68 | 0 | -1.53– -0.63 |
Intercept | -2.92 | 0.38 | -7.73 | 0 | -3.66– -2.18 |