Exploring injury severity of pedestrian-vehicle crashes at intersections: unbalanced panel mixed ordered probit model

European Transport Research Review

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Table 2 Results for random-effects, random parameter and unbalanced panel mixed ordered probit model

Variable	Random-effects ordered probit			Random parameter ordered probit			Panel mixed ordered probit
Variable	Coef	SE	z	Coef	SE	z	Coef	SE	z
Day	− 0.198^*	0.078	− 2.55	− 0.214^*	0.077	− 2.77	− 0.203^*	0.078	− 2.62
Pedestrian age
> 65 years old	0.367^*	0.065	5.58	0.375^*	0.065	5.75	0.364^*	0.066	5.54
Pedestrian gender				− 0.152^*	0.061	− 2.50	− 0.149^*	0.061	− 2.43
Speed limit
> 50 km/h	0.517^*	0.151	3.40	0.524^*	0.151	3.46	0.551^*	0.153	3.61
Vehicle type	0.124^*	0.032	3.79	0.111^*	0.032	3.45	0.127^*	0.033	3.87
NoPT	0.406^*	0.062	6.53	0.406^*	0.061	6.59	0.405^*	0.062	6.51
NoPS	− 1.498^*	0.059	− 25.37	− 1.498^*	0.058	− 25.54	− 1.506^*	0.059	− 25.43
\({\upsigma }_{\upvarepsilon }^{2}\)	0.011	0.008		0.011	0.008		0.010	0.008
Goodness-of-fit
No. of observations	1995			1995			1995
Quasi/Log likelihood at zero	− 1591.702			− 1591.702			− 1591.702
Quasi/Log Likelihood at convergence	− 1171.427			− 1172.653			− 1168.453
AIC	2362.854			2365.307			2358.907
BIC	2418.838			2421.291			2402.489