Fig. 2From: Bicycle helmet laws and persistent racial and ethnic helmet use disparities among urban high school students: a repeated cross-sectional analysisChange in helmet use disparity compared to each jurisdiction’s white subpopulation. Comparisons are from the pre-law baseline. Horizontal reference line corresponds to no change in disparity. Vertical reference lines correspond to the end of the pre-law period and start of the post-law period. Error bars represent 95 % confidence intervalsBack to article page