Table 2 Yearly prevalence of drug test result among fatally-injured drivers who died within 1 h of crashing by year, 2007 to 2017
From: Positive drug test trends in fatally-injured drivers in the United States from 2007 to 2017
Death Year | Full Sample | Tested Positive | Tested Negative | Other* | |||
|---|---|---|---|---|---|---|---|
n | n (%) | n (%) | n (%) | ||||
2007 | 10,839 | 2239 | 20.70% | 5786 | 53.40% | 2814 | 26.00% |
2008 | 9642 | 2218 | 23.00% | 5186 | 53.80% | 2238 | 23.20% |
2009 | 8362 | 2078 | 24.90% | 4297 | 51.40% | 1987 | 23.80% |
2010 | 8029 | 2087 | 26.00% | 4359 | 54.30% | 1583 | 19.70% |
2011 | 7901 | 2214 | 28.00% | 4094 | 51.80% | 1593 | 20.20% |
2012 | 8969 | 2642 | 29.50% | 4345 | 48.40% | 1982 | 22.10% |
2013 | 8868 | 2669 | 30.10% | 4146 | 46.80% | 2053 | 23.20% |
2014 | 8720 | 2791 | 32.00% | 4029 | 46.20% | 1900 | 21.80% |
2015 | 9838 | 3185 | 32.40% | 4477 | 45.50% | 2176 | 22.10% |
2016 | 10,533 | 3406 | 32.30% | 4756 | 45.20% | 2371 | 22.50% |
2017 | 10,520 | 3227 | 30.70% | 3909 | 37.20% | 3384 | 32.20% |
Cochran–Armitage test Z, P-value** | Z = 26.3, p < .0001 | Z = -29.3, p < .0001 | Z = 6.7, p < .0001 | ||||