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Fig. 2 | Substance Abuse Treatment, Prevention, and Policy

Fig. 2

From: Positive drug test trends in fatally-injured drivers in the United States from 2007 to 2017

Fig. 2

Trend in yearly prevalence in positive drug test among drivers who died within 1 h of crashing, by race. Cochran–Armitage tests were used to assess the statistical significance of changes in the percentage of drug involvement in fatally-injured drivers over time (White: Z = 23.5,p < 0.001;Black: Z = 11.6,p < 0.001;Hispanic: Z = 8.0,p < 0.001;Other: Z = 2.7,p < 0.01)

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