Evaluating the impacts of the demerit points system on traffic law violations and driver involvement in road accidents in Israel

European Transport Research Review

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Table 7 Changes in injury accidents' indicators* between before and after periods, with implementation of the corrective measures in 2006

a—in the treatment-groups and comparison-groups of drivers
Treatment type	1 – treatment-group, 0—comparison-group	Estimate: relation between accident indicators in before and after periods, in logarithmic-scale	St. Error	Adj P (Bonferroni)	Exp (Estimate)	Relative reduction in accident indicator between before and after periods, %
1	0	−0.004	0.008	0.643	0.996	−0.4
	1	0.261	0.013	< 0.0001	1.298	29.8
2	0	0.015	0.012	0.209	1.015	1.5
	1	0.263	0.020	< 0.0001	1.301	30.1
3	0	0.018	0.012	0.131	1.018	1.8
	1	0.237	0.019	< 0.0001	1.267	26.7
4	0	0.001	0.014	0.921	1.001	0.1
	1	0.243	0.023	< 0.0001	1.275	27.5
5	0	−0.010	0.010	0.338	0.990	−1.0
	1	0.240	0.017	< 0.0001	1.271	27.1
6	0	0.013	0.015	0.369	1.014	1.4
	1	0.264	0.025	< 0.0001	1.303	30.3
7	0	0.047	0.013	0.000	1.048	4.8
	1	0.280	0.022	< 0.0001	1.323	32.3
8	0	0.008	0.017	0.623	1.008	0.8
	1	0.288	0.027	< 0.0001	1.334	33.4
All	0	0.011	0.007	0.117	1.011	1.1
	1	0.259	0.012	< 0.0001	1.296	29.6

b—in the treatment-groups vs. comparison-groups of drivers
Treatment type	Odds ratio estimate, in logarithmic-scale	St. Error	Adj P (Holm)	Exp(Odds ratio estimate)	Reduction in accident indicator between before and after periods, in treatment-group vs. comparison-group, %
1	0.264	0.015	< 0.0001	1.302	30.2
2	0.248	0.023	< 0.0001	1.281	28.1
3	0.219	0.023	< 0.0001	1.244	24.4
4	0.242	0.027	< 0.0001	1.273	27.3
5	0.250	0.020	< 0.0001	1.283	28.3
6	0.251	0.029	< 0.0001	1.285	28.5
7	0.233	0.025	< 0.0001	1.262	26.2
8	0.280	0.032	< 0.0001	1.323	32.3
All	0.248	0.014	< 0.0001	1.282	28.2