ANÁLISE ESTATÍSTICA DA ‘DÉCADA DE AÇÕES PARA A SEGURANÇA VIÁRIA’ 2011-2020

Abstract

The article deals with the evaluation of road safety indicators in the first 'Decade of Actions for Road Safety' (DARS) 2011-2020. We analyzed 17 countries that (formally) presented a road accident reduction plan to the World Health Organization (WHO), in order to verify the performance and evidence of road accident reduction during the DARS period for each one. After selecting the countries to be investigated, the main indicators were systematically collected: deaths and injuries caused by traffic accidents (TA). The collected data underwent a previous treatment in Microsoft Excel software in order to verify inconsistencies and also to adapt to the characteristics of the SPSS statistical package (version 26). A repeated measures Student's t-test was performed for each indicator and country in order to compare the actual performance with that predicted by the DARS and to verify if and which countries had significant changes in their indicators. The results indicated that only Greece was able to statistically significantly reduce the number of deaths (t(9) = -4.03, p < 0.01, 95% CI [-148; -42]) with an effect size large (Cohen's d = 1.27). In the injury indicator, two countries managed to obtain statistically significant results: Egypt (t(8) = -6.55, p < 0.01, Cohen's d = 2.18, 95% CI [-9609; -4603]) and Mexico (t(7) = -3.08, p = 0.02, Cohen's d = 1.09, 95% CI [-9040; -1194]), both with large effect sizes.