Model Fit Statistics | ||||||||||||
Observations | 45,798 | Test | Chi-Square | Pr > χ2 | ||||||||
AIC | 113780.3 | Likelihood Ratio | 5585.886 | <0.0001 | ||||||||
Model Analysis | ||||||||||||
Parameter | Possible Injury | Non-Incapacitating Injury | Incapacitating Injury | Fatal Injury | ||||||||
Coef. | Std. Error | Pr > χ2 | Coef. | Std. Error | Pr > χ2 | Coef. | Std. Error | Pr > χ2 | Coef. | Std. Error | Pr > χ2 | |
Intercept | 0.00 | 0.19 | 0.98 | 0.83 | 0.18 | <0.0001 | −0.69 | 0.22 | 0.00 | −4.42 | 0.50 | <0.0001 |
Area | - | - | - | - | - | - | 0.27 | 0.06 | <0.0001 | 0.21 | 0.13 | 0.11 |
Should Width | - | - | - | - | - | - | 0.03 | 0.01 | 0.00 | 0.09 | 0.02 | <0.0001 |
AADT | 0.002 | 0.000 | <0.0001 | - | - | - | - | - | - | 0.002 | 0.001 | 0.024 |
Truck Factor | - | - | - | - | - | - | - | - | - | 0.02 | 0.01 | 0.03 |
Post Speed | - | - | - | 0.01 | 0.00 | <0.0001 | 0.03 | 0.00 | <0.0001 | 0.03 | 0.01 | <0.0001 |
Alcohol Drug | −0.17 | 0.03 | <0.0001 | 0.11 | 0.04 | 0.00 | 0.11 | 0.05 | 0.02 | 1.33 | 0.09 | <0.0001 |
Lighting | - | - | - | - | - | - | −0.15 | 0.05 | 0.00 | −0.39 | 0.11 | 0.00 |
Rain | - | - | - | −0.28 | 0.06 | <0.0001 | −0.19 | 0.08 | 0.02 | - | - | - |
Road Wet | 0.09 | 0.04 | 0.02 | - | - | - | −0.18 | 0.07 | 0.01 | - | - | - |
Divided | 0.08 | 0.04 | 0.02 | 0.11 | 0.04 | 0.01 | - | - | - | 0.82 | 0.19 | <0.0001 |
Vision Block | −0.12 | 0.06 | 0.04 | −0.22 | 0.07 | 0.00 | - | - | - | - | - | - |
Single Vehicle | 0.40 | 0.07 | <0.0001 | 0.61 | 0.07 | <0.0001 | 0.60 | 0.08 | <0.0001 | 0.37 | 0.16 | 0.02 |
Rear End | 0.66 | 0.05 | <0.0001 | 0.24 | 0.05 | <0.0001 | - | - | - | - | - | - |
Head On | 0.72 | 0.09 | <0.0001 | 0.77 | 0.10 | <0.0001 | 0.95 | 0.13 | <0.0001 | 1.17 | 0.25 | <0.0001 |
Angle | 0.51 | 0.06 | <0.0001 | 0.63 | 0.06 | <0.0001 | 0.57 | 0.08 | <0.0001 | - | - | - |
Left Turn | 0.79 | 0.08 | <0.0001 | 0.96 | 0.08 | <0.0001 | 1.13 | 0.11 | <0.0001 | - | - | - |
Right Turn | - | - | - | −0.48 | 0.21 | 0.02 | −0.83 | 0.37 | 0.03 | - | - | - |
SideSwipe | −0.28 | 0.06 | <0.0001 | −0.59 | 0.07 | <0.0001 | −0.89 | 0.10 | <0.0001 | −2.01 | 0.27 | <0.0001 |
Fixed Object | −0.23 | 0.06 | <0.0001 | −0.41 | 0.05 | <0.0001 | −0.47 | 0.06 | <0.0001 | −0.63 | 0.13 | <0.0001 |
Automible | −1.05 | 0.16 | <0.0001 | −2.46 | 0.13 | <0.0001 | −3.13 | 0.14 | <0.0001 | −3.57 | 0.19 | <0.0001 |
Truck Bus | −1.23 | 0.16 | <0.0001 | −2.64 | 0.14 | <0.0001 | −3.17 | 0.14 | <0.0001 | −3.42 | 0.20 | <0.0001 |
Bike | 1.34 | 0.43 | 0.00 | - | - | - | - | - | - | - | - | - |
No Safety Protection | −0.13 | 0.05 | 0.01 | 0.40 | 0.05 | <0.0001 | 1.04 | 0.05 | <0.0001 | 2.09 | 0.09 | <0.0001 |
Age | −0.003 | 0.001 | <0.0001 | −0.004 | 0.001 | <0.0001 | −0.003 | 0.001 | 0.034 | - | - | - |