Table 3.
Estimated parameters (Estimate), Standard Error (SE), and results of the likelihood ratio tests (χ2) for the Poisson distribution.
| Fixed Factors | Estimate | SE | df | χ2 | p-Value |
|---|---|---|---|---|---|
| Intercept | 0.964 | 0.039 | - | - | - |
| Condition | 7 | 14.648 | 0.041 | ||
| Fish a,b | 0.375 | 0.149 | 1 | 0.012 | |
| Amphibians | 0.247 | 0.153 | 1 | 0.107 | |
| Reptiles | 0.481 | 0.144 | 1 | <0.001 | |
| Birds | 0.364 | 0.142 | 1 | 0.011 | |
| Mammals | 0.178 | 0.152 | 1 | 0.242 | |
| Apes | 0.343 | 0.144 | 1 | 0.017 | |
| Pets | 0.311 | 0.143 | 1 | 0.030 | |
| Gender (F) | 0.035 | 0.068 | 1 | 0.267 | 0.605 |
| Age (years) | 0.003 | 0.003 | 1 | 1.017 | 0.313 |
| Sleep (h) | 0.028 | 0.023 | 1 | 1.495 | 0.222 |
| Tiredness (1–10) | 0.187 | 0.014 | 1 | 207.637 | <0.001 |
a Estimate ± SE refers to the difference in the response between the reported level of this categorical predictor and the reference category of the same predictor; b “Condition (Control)” and “Gender (Male)” were the reference categories.