Expected effects of accident data recording technology evolution on the identification of accident causes and liability

European Transport Research Review

An Open Access Journal

Table 8 Groupwise comparison of the change in assessability of accident types according to data recording techniques—p values of the Kruskal–Wallis Test

Accident type pairs	1. p value traditional—EDR change	2. p value traditional – EDR + change	3. p value EDR—EDR + change
x₁–x₂	0.2553	0.00316*	0.091
x₁–x₃	0.3931	0.01472	0.2115
x₁–x₄	0.2925	0.03525	0.1172
x₁–x₅	0.5173	0.00404*	0.00052*
x₁–x₆	0.1936	0.00103*	0.1936
x₁–x₇	0.2367	0.05703	0.02451
x₂–x₃	0.4477	0.01947	0.2682
x₂–x₄	0.9238	0.7336	0.8803
x₂–x₅	0.5932	0.2987	0.03554
x₂–x₆	0.9323	0.4851	0.4917
x₂–x₇	0.0297	0.6833	0.0679
x₃–x₄	0.4894	0.1943	0.4296
x₃–x₅	0.977	0.00129*	0.00042*
x₃–x₆	0.33	0.04488	0.7461
x₃–x₇	0.0452	0.0606	0.00762
x₄–x₅	0.6091	0.2967	0.02236
x₄–x₆	0.9673	0.9284	0.6437
x₄–x₇	0.04399	0.6791	0.05512
x₅–x₆	0.508	0.07678	0.00477*
x₅–x₇	0.1084	0.6523	0.1829
x₆–x₇	0.01633	0.3254	0.02969
α_corr	0.007143