Fig. 6
From: Motorized 2–3 wheelers death rates over a decade: a global study
Box-and-whiskers plot of motorized 2–3 wheelers death rate per 100,000 population (A), motorized 2–3 wheelers/person ratio (B), and percentage of helmet wearing rate (C) of years 2007–2016 by the level of income of countries. The box resembles the 25th percentile and the 75th percentile Interquartile Range (IQR), while the line within the box resembles the median. p-value = Mann–Whitney U test for comparison of two independent groups and Kruskal–Wallis for comparison of more than two independent groups