Table 2. Variation of the age of victims in large carnivore attacks on humans in relation to time and species.
| COMPETING MODELS | β | SE | p | AICc | ΔAICc | Weighted AICc | |
|---|---|---|---|---|---|---|---|
| Year + Species | 487.6 | 0.93 | |||||
| Intercept | −28.016 | 9.767 | 0.005 | ||||
| Year | 0.016 | 0.005 | 0.001 | ||||
| Grizzly | −0.543 | 0.223 | 0.016 | ||||
| Black bear | −1.174 | 0.193 | 6.65e−09 | ||||
| Cougar | −1.440 | 0.306 | 5.13e−06 | ||||
| Wolf | −2.021 | 0.202 | <2e-16 | ||||
| Year + Species + Year: Species | 493.2 | 5.6 | 0.06 | ||||
| Species | 496.1 | 8.5 | 0.01 | ||||
| Year | 572.9 | 85.3 | 0.0 | ||||
| Null model | 573.3 | 85.7 | 0.0 |
Comparison of the five competing models built to study the variation in the age of victims over time and across species (n = 188). A summary of fitted parameters is shown for the most parsimonious candidate model. Competitive models are ranked from the lowest AICc value (best model) to the highest one. European brown bear is included in the intercept. Response variable: Log (age of victims)–normal distribution error. Adjusted R-squared = 0.3842.