Relationship between crash type and explanatory factors.

<p>This figure uses vertical bars to show the association between predictive factors and crash outcomes. The shade correlates with unadjusted p values (deeper shade = smaller p values), solid outlines indicate relationships that remain significant after correction for multiple comparisons (Bonferroni). The height of the bars indicate the percentage change in crash events per unit change in predictive factor, where one unit is the interquartile range for that factor.